diff --git a/PkmnLib.Dynamic/Models/Pokemon.cs b/PkmnLib.Dynamic/Models/Pokemon.cs
index 5fb8cbb..ed95315 100644
--- a/PkmnLib.Dynamic/Models/Pokemon.cs
+++ b/PkmnLib.Dynamic/Models/Pokemon.cs
@@ -1023,6 +1023,8 @@ public class PokemonImpl : ScriptSource, IPokemon
             this.RunScriptHook(script => script.ChangeIncomingDamage(this, source, ref dmg));
             damage = dmg;
         }
+        if (damage == 0)
+            return;
 
         // If the damage is more than the current health, we cap it at the current health, to prevent
         // underflow.
diff --git a/PkmnLib.Dynamic/ScriptHandling/ICustomTriggerArgs.cs b/PkmnLib.Dynamic/ScriptHandling/ICustomTriggerArgs.cs
new file mode 100644
index 0000000..3b55ec5
--- /dev/null
+++ b/PkmnLib.Dynamic/ScriptHandling/ICustomTriggerArgs.cs
@@ -0,0 +1,126 @@
+using System.Diagnostics.CodeAnalysis;
+using System.Linq.Expressions;
+using PkmnLib.Static.Utils;
+
+namespace PkmnLib.Dynamic.ScriptHandling;
+
+/// <summary>
+/// Interface for custom trigger arguments.
+/// </summary>
+public interface ICustomTriggerArgs;
+
+/// <summary>
+/// Static helper methods for working with <see cref="ICustomTriggerArgs"/>.
+///
+/// This class provides methods to get and set properties on custom trigger arguments. This allows for plugins and scripts
+/// to modify the behavior of custom triggers without needing to know the specific types of the arguments, which means
+/// they do not need to reference each other directly.
+/// </summary>
+public static class CustomTriggerArgsHelpers
+{
+    private record TypeFuncs(
+        Dictionary<StringKey, Func<ICustomTriggerArgs, object?>> Getters,
+        Dictionary<StringKey, Action<ICustomTriggerArgs, object?>> Setters);
+
+    private static readonly Dictionary<Type, TypeFuncs> TypeFuncInfo = new();
+
+    private static void PopulateForType(Type type)
+    {
+        if (TypeFuncInfo.ContainsKey(type))
+            return;
+
+        var getters = type.GetProperties().Where(p => p.CanRead && p.GetIndexParameters().Length == 0).ToDictionary(
+            p => new StringKey(p.Name), p =>
+            {
+                var parameter = Expression.Parameter(typeof(ICustomTriggerArgs), "args");
+                var typeCast = Expression.Convert(parameter, type);
+                var propertyAccess = Expression.Property(typeCast, p);
+                var convert = Expression.Convert(propertyAccess, typeof(object));
+                return Expression.Lambda<Func<ICustomTriggerArgs, object?>>(convert, parameter).Compile();
+            });
+        var setters = type.GetProperties().Where(p => p.CanWrite && p.GetIndexParameters().Length == 0).ToDictionary(
+            p => new StringKey(p.Name), p =>
+            {
+                var parameter = Expression.Parameter(typeof(ICustomTriggerArgs), "args");
+                var typeCast = Expression.Convert(parameter, type);
+                var valueParameter = Expression.Parameter(typeof(object), "value");
+                var propertyAccess = Expression.Property(typeCast, p);
+                var convert = Expression.Convert(valueParameter, p.PropertyType);
+                var assign = Expression.Assign(propertyAccess, convert);
+                return Expression.Lambda<Action<ICustomTriggerArgs, object?>>(assign, parameter, valueParameter)
+                    .Compile();
+            });
+
+        TypeFuncInfo[type] = new TypeFuncs(getters, setters);
+    }
+
+    private static bool TryGetGetter(Type type, StringKey key,
+        [NotNullWhen(true)] out Func<ICustomTriggerArgs, object?>? getter)
+    {
+        if (!TypeFuncInfo.ContainsKey(type))
+            PopulateForType(type);
+        return TypeFuncInfo[type].Getters.TryGetValue(key, out getter);
+    }
+
+    private static bool TryGetSetter(Type type, StringKey key,
+        [NotNullWhen(true)] out Action<ICustomTriggerArgs, object?>? setter)
+    {
+        if (!TypeFuncInfo.ContainsKey(type))
+            PopulateForType(type);
+        return TypeFuncInfo[type].Setters.TryGetValue(key, out setter);
+    }
+
+    public static T Get<T>(this ICustomTriggerArgs args, StringKey key)
+    {
+        if (args is null)
+            throw new ArgumentNullException(nameof(args));
+        var type = args.GetType();
+        if (!TryGetGetter(type, key, out var getter))
+            throw new KeyNotFoundException($"Key '{key}' not found in {type.Name}.");
+        var value = getter(args);
+        if (value is T typedValue)
+            return typedValue;
+        throw new InvalidCastException(
+            $"Value for key '{key}' in {type.Name} is of type {value?.GetType().Name}, expected {typeof(T).Name}.");
+    }
+
+    public static object? Get(this ICustomTriggerArgs args, StringKey key)
+    {
+        if (args is null)
+            throw new ArgumentNullException(nameof(args));
+        var type = args.GetType();
+        if (!TryGetGetter(type, key, out var getter))
+            throw new KeyNotFoundException($"Key '{key}' not found in {type.Name}.");
+        return getter(args);
+    }
+
+    public static bool TryGet<T>(this ICustomTriggerArgs args, StringKey key, [NotNullWhen(true)] out T? value)
+    {
+        if (args is null)
+            throw new ArgumentNullException(nameof(args));
+        var type = args.GetType();
+        if (!TryGetGetter(type, key, out var getter))
+        {
+            value = default;
+            return false;
+        }
+        var result = getter(args);
+        if (result is T typedValue)
+        {
+            value = typedValue;
+            return true;
+        }
+        value = default;
+        return false;
+    }
+
+    public static void Set(this ICustomTriggerArgs args, StringKey key, object? value)
+    {
+        if (args is null)
+            throw new ArgumentNullException(nameof(args));
+        var type = args.GetType();
+        if (!TryGetSetter(type, key, out var setter))
+            throw new KeyNotFoundException($"Key '{key}' not found in {type.Name}.");
+        setter(args, value);
+    }
+}
\ No newline at end of file
diff --git a/PkmnLib.Dynamic/ScriptHandling/Script.cs b/PkmnLib.Dynamic/ScriptHandling/Script.cs
index b1eaf40..ca026d8 100644
--- a/PkmnLib.Dynamic/ScriptHandling/Script.cs
+++ b/PkmnLib.Dynamic/ScriptHandling/Script.cs
@@ -356,6 +356,23 @@ public abstract class Script : IDeepCloneable
     {
     }
 
+    /// <summary>
+    /// This function allows a script to change the offensive stat value of an incoming move.
+    /// </summary>
+    public virtual void ChangeIncomingMoveOffensiveStatValue(IExecutingMove executingMove, IPokemon target,
+        byte hitNumber, uint defensiveStat, StatisticSet<uint> targetStats, Statistic offensive, ref uint offensiveStat)
+    {
+    }
+
+    /// <summary>
+    /// This function allows a script to change the defensive stat value of an incoming move.
+    /// </summary>
+    public virtual void ChangeIncomingMoveDefensiveStatValue(IExecutingMove executingMove, IPokemon target,
+        byte hitNumber, uint origOffensiveStat, StatisticSet<uint> targetStats, Statistic defensive,
+        ref uint defensiveStat)
+    {
+    }
+
     /// <summary>
     /// This function allows a script to change the raw modifier we retrieved from the stats of the
     /// defender and attacker. The default value is the offensive stat divided by the defensive stat.
@@ -633,10 +650,10 @@ public abstract class Script : IDeepCloneable
     /// The name of the event that is triggered. This should be unique for each different event. Overriding scripts
     /// should validate the event name is one they should handle.
     /// </param>
-    /// <param name="parameters">
-    /// The parameters that are passed to the event. This can be null if no parameters are passed.
+    /// <param name="args">
+    /// The parameters that are passed to the event.
     /// </param>
-    public virtual void CustomTrigger(StringKey eventName, IDictionary<StringKey, object?>? parameters)
+    public virtual void CustomTrigger(StringKey eventName, ICustomTriggerArgs args)
     {
     }
 
diff --git a/Plugins/PkmnLib.Plugin.Gen7.Tests/Scripts/Abilities/MegaLauncherTests.cs b/Plugins/PkmnLib.Plugin.Gen7.Tests/Scripts/Abilities/MegaLauncherTests.cs
new file mode 100644
index 0000000..3a5d326
--- /dev/null
+++ b/Plugins/PkmnLib.Plugin.Gen7.Tests/Scripts/Abilities/MegaLauncherTests.cs
@@ -0,0 +1,42 @@
+using PkmnLib.Dynamic.Models;
+using PkmnLib.Dynamic.ScriptHandling;
+using PkmnLib.Plugin.Gen7.Scripts.Abilities;
+using PkmnLib.Plugin.Gen7.Scripts.Moves;
+using PkmnLib.Static;
+using PkmnLib.Static.Moves;
+using PkmnLib.Static.Utils;
+
+namespace PkmnLib.Plugin.Gen7.Tests.Scripts.Abilities;
+
+public class MegaLauncherTests
+{
+    [Test]
+    public async Task ChangeHealPercent_HealPercentIncreasesForAuraMoves()
+    {
+        // Arrange
+        var move = Substitute.For<IExecutingMove>();
+        var target = Substitute.For<IPokemon>();
+        var healPercent = 0.5f;
+        var user = Substitute.For<IPokemon>();
+        move.User.Returns(user);
+        move.UseMove.Category.Returns(MoveCategory.Special);
+        move.UseMove.HasFlag("pulse").Returns(true);
+        var megaLauncher = new ScriptContainer(new MegaLauncher());
+        move.User.AbilityScript.Returns(megaLauncher);
+        move.GetScripts().Returns(new ScriptIterator([megaLauncher]));
+        var healPercentScript = new HealPercent();
+        uint healedAmount = 0;
+        target.Heal(Arg.Do<uint>(amount => healedAmount = amount));
+        target.BoostedStats.Returns(new StatisticSet<uint>(100, 100, 100, 100, 100, 100));
+
+        // Act
+        healPercentScript.OnInitialize(new Dictionary<StringKey, object?>
+        {
+            { "healPercent", healPercent },
+        });
+        healPercentScript.OnSecondaryEffect(move, target, 0);
+
+        // Assert
+        await Assert.That(healedAmount).IsEqualTo((uint)(target.BoostedStats.Hp * healPercent * 1.5f));
+    }
+}
\ No newline at end of file
diff --git a/Plugins/PkmnLib.Plugin.Gen7/Data/Abilities.jsonc b/Plugins/PkmnLib.Plugin.Gen7/Data/Abilities.jsonc
index 858099f..3beb10c 100755
--- a/Plugins/PkmnLib.Plugin.Gen7/Data/Abilities.jsonc
+++ b/Plugins/PkmnLib.Plugin.Gen7/Data/Abilities.jsonc
@@ -342,15 +342,33 @@
   "magic_bounce": {
     "effect": "magic_bounce"
   },
-  "magic_guard": {},
-  "magician": {},
-  "magma_armor": {},
-  "magnet_pull": {},
-  "marvel_scale": {},
-  "mega_launcher": {},
-  "merciless": {},
-  "minus": {},
-  "misty_surge": {},
+  "magic_guard": {
+    "effect": "magic_guard"
+  },
+  "magician": {
+    "effect": "magician"
+  },
+  "magma_armor": {
+    "effect": "magma_armor"
+  },
+  "magnet_pull": {
+    "effect": "magnet_pull"
+  },
+  "marvel_scale": {
+    "effect": "marvel_scale"
+  },
+  "mega_launcher": {
+    "effect": "mega_launcher"
+  },
+  "merciless": {
+    "effect": "merciless"
+  },
+  "minus": {
+    "effect": "minus"
+  },
+  "misty_surge": {
+    "effect": "misty_surge"
+  },
   "mold_breaker": {},
   "moody": {},
   "motor_drive": {},
diff --git a/Plugins/PkmnLib.Plugin.Gen7/Libraries/Battling/Gen7DamageCalculator.cs b/Plugins/PkmnLib.Plugin.Gen7/Libraries/Battling/Gen7DamageCalculator.cs
index 57508e0..5b2f5d4 100644
--- a/Plugins/PkmnLib.Plugin.Gen7/Libraries/Battling/Gen7DamageCalculator.cs
+++ b/Plugins/PkmnLib.Plugin.Gen7/Libraries/Battling/Gen7DamageCalculator.cs
@@ -136,6 +136,10 @@ public class Gen7DamageCalculator(Gen7PluginConfiguration configuration) : IDama
             defensiveStat, targetStats, offensive, ref offensiveStat));
         executingMove.RunScriptHook(script => script.ChangeDefensiveStatValue(executingMove, target, hitNumber,
             origOffensiveStat, targetStats, defensive, ref defensiveStat));
+        target.RunScriptHook(script => script.ChangeIncomingMoveOffensiveStatValue(executingMove, target, hitNumber,
+            defensiveStat, targetStats, offensive, ref offensiveStat));
+        target.RunScriptHook(script => script.ChangeIncomingMoveDefensiveStatValue(executingMove, target, hitNumber,
+            origOffensiveStat, targetStats, defensive, ref defensiveStat));
 
         var modifier = (float)offensiveStat / defensiveStat;
         executingMove.RunScriptHook(script =>
diff --git a/Plugins/PkmnLib.Plugin.Gen7/Scripts/Abilities/AuraBreak.cs b/Plugins/PkmnLib.Plugin.Gen7/Scripts/Abilities/AuraBreak.cs
index f19b45c..967da63 100644
--- a/Plugins/PkmnLib.Plugin.Gen7/Scripts/Abilities/AuraBreak.cs
+++ b/Plugins/PkmnLib.Plugin.Gen7/Scripts/Abilities/AuraBreak.cs
@@ -10,21 +10,16 @@ namespace PkmnLib.Plugin.Gen7.Scripts.Abilities;
 public class AuraBreak : Script
 {
     /// <inheritdoc />
-    public override void CustomTrigger(StringKey eventName, IDictionary<StringKey, object?>? parameters)
+    public override void CustomTrigger(StringKey eventName, ICustomTriggerArgs args)
     {
-        if (eventName != CustomTriggers.ModifyAuraEffect || parameters == null)
+        if (eventName != CustomTriggers.ModifyAuraEffect || args is not CustomTriggers.ModifyAuraEffectArgs auraArgs)
             return;
 
-        if (!parameters.TryGetValue("aura_type", out var auraTypeObj) || auraTypeObj is not string auraType)
-            return;
-
-        if (auraType is "dark" or "fairy")
+        var typeName = auraArgs.Move.UseMove.MoveType.Name;
+        if (typeName == "dark" || typeName == "fairy")
         {
-            if (parameters.TryGetValue("modifier", out var modifierObj) && modifierObj is float)
-            {
-                // Reverse the aura effect by reducing power by 25%
-                parameters["modifier"] = 0.75f;
-            }
+            // Reverse the aura effect by reducing power by 25%
+            auraArgs.AuraEffect *= 0.75f;
         }
     }
 }
\ No newline at end of file
diff --git a/Plugins/PkmnLib.Plugin.Gen7/Scripts/Abilities/Comatose.cs b/Plugins/PkmnLib.Plugin.Gen7/Scripts/Abilities/Comatose.cs
index ad41dac..92dd45d 100644
--- a/Plugins/PkmnLib.Plugin.Gen7/Scripts/Abilities/Comatose.cs
+++ b/Plugins/PkmnLib.Plugin.Gen7/Scripts/Abilities/Comatose.cs
@@ -21,11 +21,11 @@ public class Comatose : Script
     }
 
     /// <inheritdoc />
-    public override void CustomTrigger(StringKey eventName, IDictionary<StringKey, object?>? parameters)
+    public override void CustomTrigger(StringKey eventName, ICustomTriggerArgs args)
     {
-        if (eventName == CustomTriggers.BypassSleep && parameters != null)
+        if (eventName == CustomTriggers.BypassSleep && args is CustomTriggers.BypassSleepArgs bypassArgs)
         {
-            parameters["bypass_sleep"] = true;
+            bypassArgs.Bypass = true;
         }
     }
 }
\ No newline at end of file
diff --git a/Plugins/PkmnLib.Plugin.Gen7/Scripts/Abilities/DarkAura.cs b/Plugins/PkmnLib.Plugin.Gen7/Scripts/Abilities/DarkAura.cs
index 2cd6d9f..82cefb3 100644
--- a/Plugins/PkmnLib.Plugin.Gen7/Scripts/Abilities/DarkAura.cs
+++ b/Plugins/PkmnLib.Plugin.Gen7/Scripts/Abilities/DarkAura.cs
@@ -15,17 +15,10 @@ public class DarkAura : Script
         if (move.GetHitData(target, hit).Type?.Name == "dark")
         {
             var auraModifier = 5448f / 4096f;
-            var parameters = new Dictionary<StringKey, object?>
-            {
-                ["aura_type"] = "dark",
-                ["modifier"] = auraModifier,
-            };
+            var args = new CustomTriggers.ModifyAuraEffectArgs(move, target, hit, auraModifier);
             move.Battle.Sides.SelectMany(side => side.Pokemon).WhereNotNull()
-                .RunScriptHook(x => x.CustomTrigger(CustomTriggers.ModifyAuraEffect, parameters));
-            if (parameters.TryGetValue("modifier", out var modObj) && modObj is float modValue)
-            {
-                auraModifier = modValue;
-            }
+                .RunScriptHook(x => x.CustomTrigger(CustomTriggers.ModifyAuraEffect, args));
+            auraModifier = args.AuraEffect;
             modifier *= auraModifier;
             move.Battle.EventHook.Invoke(new AbilityTriggerEvent(move.User));
         }
diff --git a/Plugins/PkmnLib.Plugin.Gen7/Scripts/Abilities/EarlyBird.cs b/Plugins/PkmnLib.Plugin.Gen7/Scripts/Abilities/EarlyBird.cs
index c8be63f..4a7bab6 100644
--- a/Plugins/PkmnLib.Plugin.Gen7/Scripts/Abilities/EarlyBird.cs
+++ b/Plugins/PkmnLib.Plugin.Gen7/Scripts/Abilities/EarlyBird.cs
@@ -11,15 +11,11 @@ namespace PkmnLib.Plugin.Gen7.Scripts.Abilities;
 public class EarlyBird : Script
 {
     /// <inheritdoc />
-    public override void CustomTrigger(StringKey eventName, IDictionary<StringKey, object?>? parameters)
+    public override void CustomTrigger(StringKey eventName, ICustomTriggerArgs args)
     {
         if (eventName != CustomTriggers.ModifySleepTurns)
             return;
-        if (parameters == null)
-            return;
-        if (parameters.TryGetValue("turns", out var turnsObj) && turnsObj is int turns)
-        {
-            parameters["turns"] = turns / 2;
-        }
+        if (args is CustomTriggers.ModifySleepTurnsArgs sleepArgs)
+            sleepArgs.Turns /= 2;
     }
 }
\ No newline at end of file
diff --git a/Plugins/PkmnLib.Plugin.Gen7/Scripts/Abilities/FairyAura.cs b/Plugins/PkmnLib.Plugin.Gen7/Scripts/Abilities/FairyAura.cs
index fb08238..d1fb2f0 100644
--- a/Plugins/PkmnLib.Plugin.Gen7/Scripts/Abilities/FairyAura.cs
+++ b/Plugins/PkmnLib.Plugin.Gen7/Scripts/Abilities/FairyAura.cs
@@ -16,17 +16,10 @@ public class FairyAura : Script
         if (move.GetHitData(target, hit).Type?.Name == "fairy")
         {
             var auraModifier = 5448f / 4096f;
-            var parameters = new Dictionary<StringKey, object?>
-            {
-                ["aura_type"] = "fairy",
-                ["modifier"] = auraModifier,
-            };
+            var args = new CustomTriggers.ModifyAuraEffectArgs(move, target, hit, auraModifier);
             move.Battle.Sides.SelectMany(side => side.Pokemon).WhereNotNull()
-                .RunScriptHook(x => x.CustomTrigger(CustomTriggers.ModifyAuraEffect, parameters));
-            if (parameters.TryGetValue("modifier", out var modObj) && modObj is float modValue)
-            {
-                auraModifier = modValue;
-            }
+                .RunScriptHook(x => x.CustomTrigger(CustomTriggers.ModifyAuraEffect, args));
+            auraModifier = args.AuraEffect;
             modifier *= auraModifier;
             move.Battle.EventHook.Invoke(new AbilityTriggerEvent(move.User));
         }
diff --git a/Plugins/PkmnLib.Plugin.Gen7/Scripts/Abilities/GrassPelt.cs b/Plugins/PkmnLib.Plugin.Gen7/Scripts/Abilities/GrassPelt.cs
index 1e3ecd0..2d72de5 100644
--- a/Plugins/PkmnLib.Plugin.Gen7/Scripts/Abilities/GrassPelt.cs
+++ b/Plugins/PkmnLib.Plugin.Gen7/Scripts/Abilities/GrassPelt.cs
@@ -10,8 +10,8 @@ namespace PkmnLib.Plugin.Gen7.Scripts.Abilities;
 public class GrassPelt : Script
 {
     /// <inheritdoc />
-    public override void ChangeDefensiveStatValue(IExecutingMove move, IPokemon target, byte hit, uint offensiveStat,
-        ImmutableStatisticSet<uint> targetStats, Statistic stat, ref uint value)
+    public override void ChangeIncomingMoveDefensiveStatValue(IExecutingMove move, IPokemon target, byte hit,
+        uint offensiveStat, StatisticSet<uint> statisticSet, Statistic stat, ref uint value)
     {
         if (move.Battle.TerrainName == ScriptUtils.ResolveName<Terrain.GrassyTerrain>() && stat == Statistic.Defense)
             value = value.MultiplyOrMax(1.5f);
diff --git a/Plugins/PkmnLib.Plugin.Gen7/Scripts/Abilities/IceBody.cs b/Plugins/PkmnLib.Plugin.Gen7/Scripts/Abilities/IceBody.cs
index 67fbc60..235e67f 100644
--- a/Plugins/PkmnLib.Plugin.Gen7/Scripts/Abilities/IceBody.cs
+++ b/Plugins/PkmnLib.Plugin.Gen7/Scripts/Abilities/IceBody.cs
@@ -41,11 +41,10 @@ public class IceBody : Script
     }
 
     /// <inheritdoc />
-    public override void CustomTrigger(StringKey eventName, IDictionary<StringKey, object?>? parameters)
+    public override void CustomTrigger(StringKey eventName, ICustomTriggerArgs args)
     {
-        if (eventName != CustomTriggers.IgnoreHail || parameters is null)
+        if (eventName != CustomTriggers.IgnoreHail || args is not CustomTriggers.IgnoreHailArgs ignoreHailArgs)
             return;
-
-        parameters["ignoresHail"] = true;
+        ignoreHailArgs.Ignore = true;
     }
 }
\ No newline at end of file
diff --git a/Plugins/PkmnLib.Plugin.Gen7/Scripts/Abilities/Infiltrator.cs b/Plugins/PkmnLib.Plugin.Gen7/Scripts/Abilities/Infiltrator.cs
index 9069bab..979bb6b 100644
--- a/Plugins/PkmnLib.Plugin.Gen7/Scripts/Abilities/Infiltrator.cs
+++ b/Plugins/PkmnLib.Plugin.Gen7/Scripts/Abilities/Infiltrator.cs
@@ -9,12 +9,15 @@ namespace PkmnLib.Plugin.Gen7.Scripts.Abilities;
 public class Infiltrator : Script
 {
     /// <inheritdoc />
-    public override void CustomTrigger(StringKey eventName, IDictionary<StringKey, object?>? parameters)
+    public override void CustomTrigger(StringKey eventName, ICustomTriggerArgs args)
     {
-        if ((eventName != CustomTriggers.BypassProtection && eventName != CustomTriggers.BypassSubstitute) ||
-            parameters is null)
-            return;
-
-        parameters["bypass"] = true;
+        if (eventName == CustomTriggers.BypassSubstitute && args is CustomTriggers.BypassSubstituteArgs bypassArgs)
+        {
+            bypassArgs.Bypass = true;
+        }
+        else if (eventName == CustomTriggers.BypassProtection && args is CustomTriggers.BypassProtectionArgs customArgs)
+        {
+            customArgs.Bypass = true;
+        }
     }
 }
\ No newline at end of file
diff --git a/Plugins/PkmnLib.Plugin.Gen7/Scripts/Abilities/LiquidOoze.cs b/Plugins/PkmnLib.Plugin.Gen7/Scripts/Abilities/LiquidOoze.cs
index 1902f59..47e9f29 100644
--- a/Plugins/PkmnLib.Plugin.Gen7/Scripts/Abilities/LiquidOoze.cs
+++ b/Plugins/PkmnLib.Plugin.Gen7/Scripts/Abilities/LiquidOoze.cs
@@ -9,11 +9,10 @@ namespace PkmnLib.Plugin.Gen7.Scripts.Abilities;
 public class LiquidOoze : Script
 {
     /// <inheritdoc />
-    public override void CustomTrigger(StringKey eventName, IDictionary<StringKey, object?>? parameters)
+    public override void CustomTrigger(StringKey eventName, ICustomTriggerArgs args)
     {
-        if (eventName != CustomTriggers.ModifyDrain || parameters is null)
+        if (eventName != CustomTriggers.ModifyDrain || args is not CustomTriggers.ModifyDrainArgs parameters)
             return;
-
-        parameters["invert"] = true;
+        parameters.Invert = true;
     }
 }
\ No newline at end of file
diff --git a/Plugins/PkmnLib.Plugin.Gen7/Scripts/Abilities/MagicGuard.cs b/Plugins/PkmnLib.Plugin.Gen7/Scripts/Abilities/MagicGuard.cs
new file mode 100644
index 0000000..5a150e8
--- /dev/null
+++ b/Plugins/PkmnLib.Plugin.Gen7/Scripts/Abilities/MagicGuard.cs
@@ -0,0 +1,25 @@
+namespace PkmnLib.Plugin.Gen7.Scripts.Abilities;
+
+/// <summary>
+/// Magic Guard is an ability that prevents all damage except from direct attacks.
+///
+/// <see href="https://bulbapedia.bulbagarden.net/wiki/Magic_Guard_(Ability)">Bulbapedia - Magic Guard</see>
+/// </summary>
+[Script(ScriptCategory.Ability, "magic_guard")]
+public class MagicGuard : Script
+{
+    /// <inheritdoc />
+    public override void ChangeIncomingDamage(IPokemon pokemon, DamageSource source, ref uint damage)
+    {
+        // Magic Guard doesn't work if the Pokémon is not in battle.
+        if (pokemon.BattleData is null)
+            return;
+
+        if (source is DamageSource.MoveDamage or DamageSource.Struggle or DamageSource.FormChange)
+        {
+            // If the damage is from a move, struggle, or form change, we don't prevent it.
+            return;
+        }
+        damage = 0;
+    }
+}
\ No newline at end of file
diff --git a/Plugins/PkmnLib.Plugin.Gen7/Scripts/Abilities/Magician.cs b/Plugins/PkmnLib.Plugin.Gen7/Scripts/Abilities/Magician.cs
new file mode 100644
index 0000000..47956f3
--- /dev/null
+++ b/Plugins/PkmnLib.Plugin.Gen7/Scripts/Abilities/Magician.cs
@@ -0,0 +1,25 @@
+using PkmnLib.Static.Moves;
+
+namespace PkmnLib.Plugin.Gen7.Scripts.Abilities;
+
+/// <summary>
+/// Magician is an ability that steals the held item of a Pokémon it hits with a move.
+///
+/// <see href="https://bulbapedia.bulbagarden.net/wiki/Magician_(Ability)">Bulbapedia - Magician</see>
+/// </summary>
+[Script(ScriptCategory.Ability, "magician")]
+public class Magician : Script
+{
+    /// <inheritdoc />
+    public override void OnSecondaryEffect(IExecutingMove move, IPokemon target, byte hit)
+    {
+        if (move.UseMove.Category is MoveCategory.Status)
+            return;
+
+        if (move.User.HeldItem is not null || target.HeldItem is null)
+            return;
+
+        move.Battle.EventHook.Invoke(new AbilityTriggerEvent(move.User));
+        _ = move.User.SetHeldItem(target.RemoveHeldItemForBattle());
+    }
+}
\ No newline at end of file
diff --git a/Plugins/PkmnLib.Plugin.Gen7/Scripts/Abilities/MagmaArmor.cs b/Plugins/PkmnLib.Plugin.Gen7/Scripts/Abilities/MagmaArmor.cs
new file mode 100644
index 0000000..949865a
--- /dev/null
+++ b/Plugins/PkmnLib.Plugin.Gen7/Scripts/Abilities/MagmaArmor.cs
@@ -0,0 +1,31 @@
+namespace PkmnLib.Plugin.Gen7.Scripts.Abilities;
+
+/// <summary>
+/// Magma Armor is an ability that prevents the Pokémon from being frozen.
+///
+/// <see href="https://bulbapedia.bulbagarden.net/wiki/Magma_Armor_(Ability)">Bulbapedia - Magma Armor</see>
+/// </summary>
+[Script(ScriptCategory.Ability, "magma_armor")]
+public class MagmaArmor : Script
+{
+    /// <inheritdoc />
+    public override void PreventStatusChange(IPokemon pokemon, StringKey status, bool selfInflicted,
+        ref bool preventStatus)
+    {
+        if (status == ScriptUtils.ResolveName<Status.Frozen>())
+        {
+            pokemon.BattleData?.Battle.EventHook.Invoke(new AbilityTriggerEvent(pokemon));
+            preventStatus = true;
+        }
+    }
+
+    /// <inheritdoc />
+    public override void OnSwitchIn(IPokemon pokemon, byte position)
+    {
+        if (pokemon.HasStatus(ScriptUtils.ResolveName<Status.Frozen>()))
+        {
+            pokemon.BattleData?.Battle.EventHook.Invoke(new AbilityTriggerEvent(pokemon));
+            pokemon.ClearStatus();
+        }
+    }
+}
\ No newline at end of file
diff --git a/Plugins/PkmnLib.Plugin.Gen7/Scripts/Abilities/MagnetPull.cs b/Plugins/PkmnLib.Plugin.Gen7/Scripts/Abilities/MagnetPull.cs
new file mode 100644
index 0000000..38c31c4
--- /dev/null
+++ b/Plugins/PkmnLib.Plugin.Gen7/Scripts/Abilities/MagnetPull.cs
@@ -0,0 +1,24 @@
+namespace PkmnLib.Plugin.Gen7.Scripts.Abilities;
+
+/// <summary>
+/// Magnet Pull is an ability that prevents Steel-type Pokémon from fleeing or switching out.
+///
+/// <see href="https://bulbapedia.bulbagarden.net/wiki/Magnet_Pull_(Ability)">Bulbapedia - Magnet Pull</see>
+/// </summary>
+[Script(ScriptCategory.Ability, "magnet_pull")]
+public class MagnetPull : Script
+{
+    /// <inheritdoc />
+    public override void PreventOpponentRunAway(IFleeChoice choice, ref bool prevent)
+    {
+        if (choice.User.Types.Any(x => x.Name == "steel"))
+            prevent = true;
+    }
+
+    /// <inheritdoc />
+    public override void PreventOpponentSwitch(ISwitchChoice choice, ref bool prevent)
+    {
+        if (choice.User.Types.Any(x => x.Name == "steel"))
+            prevent = true;
+    }
+}
\ No newline at end of file
diff --git a/Plugins/PkmnLib.Plugin.Gen7/Scripts/Abilities/MarvelScale.cs b/Plugins/PkmnLib.Plugin.Gen7/Scripts/Abilities/MarvelScale.cs
new file mode 100644
index 0000000..5c0f9de
--- /dev/null
+++ b/Plugins/PkmnLib.Plugin.Gen7/Scripts/Abilities/MarvelScale.cs
@@ -0,0 +1,20 @@
+namespace PkmnLib.Plugin.Gen7.Scripts.Abilities;
+
+/// <summary>
+/// Marvel Scale is an ability that increases the Pokémon's Defense by 50% when it has a status condition.
+///
+/// <see href="https://bulbapedia.bulbagarden.net/wiki/Marvel_Scale_(Ability)">Bulbapedia - Marvel Scale</see>
+/// </summary>
+[Script(ScriptCategory.Ability, "marvel_scale")]
+public class MarvelScale : Script
+{
+    /// <inheritdoc />
+    public override void ChangeIncomingMoveDefensiveStatValue(IExecutingMove move, IPokemon target, byte hit,
+        uint offensiveStat, StatisticSet<uint> statisticSet, Statistic stat, ref uint value)
+    {
+        if (!target.StatusScript.IsEmpty && stat == Statistic.Defense)
+        {
+            value = value.MultiplyOrMax(1.5f);
+        }
+    }
+}
\ No newline at end of file
diff --git a/Plugins/PkmnLib.Plugin.Gen7/Scripts/Abilities/MegaLauncher.cs b/Plugins/PkmnLib.Plugin.Gen7/Scripts/Abilities/MegaLauncher.cs
new file mode 100644
index 0000000..c28879d
--- /dev/null
+++ b/Plugins/PkmnLib.Plugin.Gen7/Scripts/Abilities/MegaLauncher.cs
@@ -0,0 +1,29 @@
+namespace PkmnLib.Plugin.Gen7.Scripts.Abilities;
+
+/// <summary>
+/// Mega Launcher is an ability that boosts the power of aura and pulse moves.
+///
+/// <see href="https://bulbapedia.bulbagarden.net/wiki/Mega_Launcher_(Ability)">Bulbapedia - Mega Launcher</see>
+/// </summary>
+[Script(ScriptCategory.Ability, "mega_launcher")]
+public class MegaLauncher : Script
+{
+    /// <inheritdoc />
+    public override void ChangeBasePower(IExecutingMove move, IPokemon target, byte hit, ref ushort basePower)
+    {
+        if (move.UseMove.HasFlag("pulse"))
+        {
+            basePower = basePower.MultiplyOrMax(1.5f);
+        }
+    }
+
+    /// <inheritdoc />
+    public override void CustomTrigger(StringKey eventName, ICustomTriggerArgs args)
+    {
+        if (eventName != CustomTriggers.ModifyHealPercent || args is not CustomTriggers.ModifyHealPercentArgs healArgs)
+            return;
+
+        if (healArgs.Move.UseMove.HasFlag("pulse"))
+            healArgs.HealPercent *= 1.5f;
+    }
+}
\ No newline at end of file
diff --git a/Plugins/PkmnLib.Plugin.Gen7/Scripts/Abilities/Merciless.cs b/Plugins/PkmnLib.Plugin.Gen7/Scripts/Abilities/Merciless.cs
new file mode 100644
index 0000000..7dc6f50
--- /dev/null
+++ b/Plugins/PkmnLib.Plugin.Gen7/Scripts/Abilities/Merciless.cs
@@ -0,0 +1,22 @@
+using PkmnLib.Plugin.Gen7.Scripts.Status;
+
+namespace PkmnLib.Plugin.Gen7.Scripts.Abilities;
+
+/// <summary>
+/// Merciless is an ability that always results in critical hits against poisoned targets.
+///
+/// <see href="https://bulbapedia.bulbagarden.net/wiki/Merciless_(Ability)">Bulbapedia - Merciless</see>
+/// </summary>
+[Script(ScriptCategory.Ability, "merciless")]
+public class Merciless : Script
+{
+    /// <inheritdoc />
+    public override void ChangeCriticalStage(IExecutingMove move, IPokemon target, byte hit, ref byte stage)
+    {
+        if (target.StatusScript.Script?.Name == ScriptUtils.ResolveName<Poisoned>() ||
+            target.StatusScript.Script?.Name == ScriptUtils.ResolveName<BadlyPoisoned>())
+        {
+            stage = 100;
+        }
+    }
+}
\ No newline at end of file
diff --git a/Plugins/PkmnLib.Plugin.Gen7/Scripts/Abilities/Minus.cs b/Plugins/PkmnLib.Plugin.Gen7/Scripts/Abilities/Minus.cs
new file mode 100644
index 0000000..5d42f24
--- /dev/null
+++ b/Plugins/PkmnLib.Plugin.Gen7/Scripts/Abilities/Minus.cs
@@ -0,0 +1,23 @@
+namespace PkmnLib.Plugin.Gen7.Scripts.Abilities;
+
+/// <summary>
+/// Minus is an ability that boosts Special Attack if another ally has Plus or Minus.
+///
+/// <see href="https://bulbapedia.bulbagarden.net/wiki/Minus_(Ability)">Bulbapedia - Minus</see>
+/// </summary>
+[Script(ScriptCategory.Ability, "minus")]
+public class Minus : Script
+{
+    /// <inheritdoc />
+    public override void ChangeOffensiveStatValue(IExecutingMove move, IPokemon target, byte hit, uint defensiveStat,
+        ImmutableStatisticSet<uint> targetStats, Statistic stat, ref uint value)
+    {
+        var battleData = move.User.BattleData;
+        if (battleData is null)
+            return;
+        if (battleData.BattleSide.Pokemon.WhereNotNull().Any(x => x.IsUsable && x.ActiveAbility?.Name == "plus"))
+        {
+            value = value.MultiplyOrMax(1.5f);
+        }
+    }
+}
\ No newline at end of file
diff --git a/Plugins/PkmnLib.Plugin.Gen7/Scripts/Abilities/MistySurge.cs b/Plugins/PkmnLib.Plugin.Gen7/Scripts/Abilities/MistySurge.cs
new file mode 100644
index 0000000..8fab36f
--- /dev/null
+++ b/Plugins/PkmnLib.Plugin.Gen7/Scripts/Abilities/MistySurge.cs
@@ -0,0 +1,28 @@
+namespace PkmnLib.Plugin.Gen7.Scripts.Abilities;
+
+/// <summary>
+/// Misty Surge is an ability that creates Misty Terrain when the Pokémon enters battle.
+///
+/// <see href="https://bulbapedia.bulbagarden.net/wiki/Misty_Surge_(Ability)">Bulbapedia - Misty Surge</see>
+/// </summary>
+[Script(ScriptCategory.Ability, "misty_surge")]
+public class MistySurge : Script
+{
+    /// <inheritdoc />
+    public override void OnSwitchIn(IPokemon pokemon, byte position)
+    {
+        if (pokemon.BattleData?.Battle is null)
+            return;
+
+        var terrainName = ScriptUtils.ResolveName<Terrain.MistyTerrain>();
+        if (pokemon.BattleData.Battle.TerrainName == terrainName)
+            return;
+
+        EventBatchId batchId = new();
+        pokemon.BattleData.Battle.EventHook.Invoke(new AbilityTriggerEvent(pokemon)
+        {
+            BatchId = batchId,
+        });
+        pokemon.BattleData.Battle.SetTerrain(terrainName, batchId);
+    }
+}
\ No newline at end of file
diff --git a/Plugins/PkmnLib.Plugin.Gen7/Scripts/CustomTriggers.cs b/Plugins/PkmnLib.Plugin.Gen7/Scripts/CustomTriggers.cs
index be64c6c..477f58d 100644
--- a/Plugins/PkmnLib.Plugin.Gen7/Scripts/CustomTriggers.cs
+++ b/Plugins/PkmnLib.Plugin.Gen7/Scripts/CustomTriggers.cs
@@ -4,29 +4,108 @@ public static class CustomTriggers
 {
     public static readonly StringKey AuroraVeilDuration = "aurora_veil_duration";
 
-    public static readonly StringKey BindNumberOfTurns = "bind_number_of_turns";
+    public record AuroraVeilDurationArgs(IExecutingMove Move, int Duration) : ICustomTriggerArgs
+    {
+        public int Duration { get; set; } = Duration;
+    }
 
-    public static readonly StringKey BindPercentOfMaxHealth = "bind_percent_of_max_health";
+    public static readonly StringKey ModifyBind = "modify_bind";
+
+    public record ModifyBindArgs(IExecutingMove Move) : ICustomTriggerArgs
+    {
+        public int Duration { get; set; } = 5;
+        public float DamagePercent { get; set; } = 1f / 8f;
+    }
 
     public static readonly StringKey IgnoreHail = "ignores_hail";
 
+    public record IgnoreHailArgs(IPokemon Pokemon) : ICustomTriggerArgs
+    {
+        public bool Ignore { get; set; } = false;
+    }
+
     public static readonly StringKey LightScreenNumberOfTurns = "light_screen_number_of_turns";
 
+    public record LightScreenNumberOfTurnsArgs(IExecutingMove Move, int Duration) : ICustomTriggerArgs
+    {
+        public int Duration { get; set; } = Duration;
+    }
+
     public static readonly StringKey ReflectNumberOfTurns = "reflect_number_of_turns";
 
+    public record ReflectNumberOfTurnsArgs(IExecutingMove Move, int Duration) : ICustomTriggerArgs
+    {
+        public int Duration { get; set; } = Duration;
+    }
+
     public static readonly StringKey BypassSleep = "bypass_sleep";
 
+    public record BypassSleepArgs(IExecutingMove Move, bool Bypass) : ICustomTriggerArgs
+    {
+        public bool Bypass { get; set; } = Bypass;
+    }
+
     public static readonly StringKey Whirlpool = "whirlpool";
 
+    public record WhirlpoolArgs(IExecutingMove Move, IPokemon Target, byte HitIndex, int Turns, float DamagePercent)
+        : ICustomTriggerArgs
+    {
+        public int Turns { get; set; } = Turns;
+        public float DamagePercent { get; set; } = DamagePercent;
+    }
+
     public static readonly StringKey ModifyAuraEffect = "modify_aura_effect";
 
+    public record ModifyAuraEffectArgs(IExecutingMove Move, IPokemon Target, byte HitIndex, float AuraEffect)
+        : ICustomTriggerArgs
+    {
+        public float AuraEffect { get; set; } = AuraEffect;
+    }
+
     public static readonly StringKey BypassChargeMove = "bypass_charge_move";
 
+    public record BypassChargeMoveArgs(IExecutingMove Move, bool Bypass) : ICustomTriggerArgs
+    {
+        public bool Bypass { get; set; } = Bypass;
+    }
+
     public static readonly StringKey ModifySleepTurns = "modify_sleep_turns";
 
+    public record ModifySleepTurnsArgs(IPokemon Pokemon, int Turns) : ICustomTriggerArgs
+    {
+        public int Turns { get; set; } = Turns;
+    }
+
     public static readonly StringKey BypassProtection = "bypass_protection";
 
+    public record BypassProtectionArgs(IExecutingMove Move, IPokemon Target, byte HitIndex, bool Bypass)
+        : ICustomTriggerArgs
+    {
+        public bool Bypass { get; set; } = Bypass;
+    }
+
     public static readonly StringKey BypassSubstitute = "bypass_subsitute";
 
+    public record BypassSubstituteArgs(IExecutingMove Move, IPokemon Target, byte HitIndex, bool Bypass)
+        : ICustomTriggerArgs
+    {
+        public bool Bypass { get; set; } = Bypass;
+    }
+
     public static readonly StringKey ModifyDrain = "modify_drain";
+
+    public record ModifyDrainArgs(IExecutingMove Move, IPokemon Target, byte Hit, uint Damage, uint Healed, bool Invert)
+        : ICustomTriggerArgs
+    {
+        public uint Healed { get; set; } = Healed;
+        public bool Invert { get; set; } = Invert;
+    }
+
+    public static readonly StringKey ModifyHealPercent = "modify_heal_percent";
+
+    public record ModifyHealPercentArgs(IExecutingMove Move, IPokemon Target, byte Hit, float HealPercent)
+        : ICustomTriggerArgs
+    {
+        public float HealPercent { get; set; } = HealPercent;
+    }
 }
\ No newline at end of file
diff --git a/Plugins/PkmnLib.Plugin.Gen7/Scripts/MoveVolatile/BypassSleepVolatile.cs b/Plugins/PkmnLib.Plugin.Gen7/Scripts/MoveVolatile/BypassSleepVolatile.cs
index d021f25..9c4ac2a 100644
--- a/Plugins/PkmnLib.Plugin.Gen7/Scripts/MoveVolatile/BypassSleepVolatile.cs
+++ b/Plugins/PkmnLib.Plugin.Gen7/Scripts/MoveVolatile/BypassSleepVolatile.cs
@@ -6,9 +6,9 @@ namespace PkmnLib.Plugin.Gen7.Scripts.MoveVolatile;
 public class BypassSleepVolatile : Script
 {
     /// <inheritdoc />
-    public override void CustomTrigger(StringKey eventName, IDictionary<StringKey, object?>? parameters)
+    public override void CustomTrigger(StringKey eventName, ICustomTriggerArgs args)
     {
-        if (eventName == CustomTriggers.BypassSleep && parameters != null)
-            parameters["bypass_sleep"] = true;
+        if (eventName == CustomTriggers.BypassSleep && args is CustomTriggers.BypassSleepArgs bypassArgs)
+            bypassArgs.Bypass = true;
     }
 }
\ No newline at end of file
diff --git a/Plugins/PkmnLib.Plugin.Gen7/Scripts/Moves/AuroraVeil.cs b/Plugins/PkmnLib.Plugin.Gen7/Scripts/Moves/AuroraVeil.cs
index b5809de..0e8c381 100644
--- a/Plugins/PkmnLib.Plugin.Gen7/Scripts/Moves/AuroraVeil.cs
+++ b/Plugins/PkmnLib.Plugin.Gen7/Scripts/Moves/AuroraVeil.cs
@@ -40,13 +40,9 @@ public class AuroraVeil : Script
 
         var side = battle.Sides[move.User.BattleData!.SideIndex];
 
-        var numberOfTurns = 5;
-        var dict = new Dictionary<StringKey, object?>
-        {
-            { "duration", numberOfTurns },
-        };
-        move.User.RunScriptHook(x => x.CustomTrigger(CustomTriggers.AuroraVeilDuration, dict));
-        numberOfTurns = (int)dict.GetOrDefault("duration", numberOfTurns)!;
+        var args = new CustomTriggers.AuroraVeilDurationArgs(move, 5);
+        move.User.RunScriptHook(x => x.CustomTrigger(CustomTriggers.AuroraVeilDuration, args));
+        var numberOfTurns = args.Duration;
 
         var script = side.VolatileScripts.StackOrAdd(ScriptUtils.ResolveName<AuroraVeilEffect>(), () =>
         {
diff --git a/Plugins/PkmnLib.Plugin.Gen7/Scripts/Moves/BellyDrum.cs b/Plugins/PkmnLib.Plugin.Gen7/Scripts/Moves/BellyDrum.cs
index aba839c..3fbaa5b 100644
--- a/Plugins/PkmnLib.Plugin.Gen7/Scripts/Moves/BellyDrum.cs
+++ b/Plugins/PkmnLib.Plugin.Gen7/Scripts/Moves/BellyDrum.cs
@@ -13,7 +13,7 @@ public class BellyDrum : Script
             return;
         }
 
-        target.Damage(maxHealthHalved, DamageSource.Misc);
+        target.Damage(maxHealthHalved, DamageSource.Misc, forceDamage: true);
         // Raising the user's Attack by 12 stages should always set it to +6.
         target.ChangeStatBoost(Statistic.Attack, 12, true, false);
     }
diff --git a/Plugins/PkmnLib.Plugin.Gen7/Scripts/Moves/Bind.cs b/Plugins/PkmnLib.Plugin.Gen7/Scripts/Moves/Bind.cs
index 2b7a311..492bb47 100644
--- a/Plugins/PkmnLib.Plugin.Gen7/Scripts/Moves/Bind.cs
+++ b/Plugins/PkmnLib.Plugin.Gen7/Scripts/Moves/Bind.cs
@@ -9,13 +9,11 @@ public class Bind : Script
     /// <inheritdoc />
     public override void OnSecondaryEffect(IExecutingMove move, IPokemon target, byte hit)
     {
-        var bindTurnsParameters = new Dictionary<StringKey, object?> { { "bind_number_of_turns", 5 } };
-        move.User.RunScriptHook(x => x.CustomTrigger(CustomTriggers.BindNumberOfTurns, bindTurnsParameters));
-        var bindDamageParameters = new Dictionary<StringKey, object?> { { "bind_percent_of_max_health", 1f / 8f } };
-        move.User.RunScriptHook(x => x.CustomTrigger(CustomTriggers.BindPercentOfMaxHealth, bindDamageParameters));
+        var args = new CustomTriggers.ModifyBindArgs(move);
+        move.User.RunScriptHook(x => x.CustomTrigger(CustomTriggers.ModifyBind, args));
 
-        var bindTurns = bindTurnsParameters.GetOrDefault("bind_number_of_turns", 5) as int? ?? 5;
-        var bindDamage = bindDamageParameters.GetOrDefault("bind_percent_of_max_health", 1f / 8f) as float? ?? 1f / 8f;
+        var bindTurns = args.Duration;
+        var bindDamage = args.DamagePercent;
 
         var bindEffect = new BindEffect(target, bindTurns, bindDamage);
         target.Volatile.Add(bindEffect);
diff --git a/Plugins/PkmnLib.Plugin.Gen7/Scripts/Moves/ChargeMove.cs b/Plugins/PkmnLib.Plugin.Gen7/Scripts/Moves/ChargeMove.cs
index d225498..3fafa87 100644
--- a/Plugins/PkmnLib.Plugin.Gen7/Scripts/Moves/ChargeMove.cs
+++ b/Plugins/PkmnLib.Plugin.Gen7/Scripts/Moves/ChargeMove.cs
@@ -7,13 +7,10 @@ public class ChargeMove : Script
 {
     public override void PreventMove(IExecutingMove move, ref bool prevent)
     {
-        var bypassCharge = false;
-        var parameters = new Dictionary<StringKey, object?>
-        {
-            { "move", move },
-            { "bypassCharge", bypassCharge },
-        };
-        move.RunScriptHook(script => script.CustomTrigger(CustomTriggers.BypassChargeMove, parameters));
+        var args = new CustomTriggers.BypassChargeMoveArgs(move, false);
+        move.RunScriptHook(script => script.CustomTrigger(CustomTriggers.BypassChargeMove, args));
+        if (args.Bypass)
+            return;
 
         var chargeMoveEffect = move.User.Volatile.Get<ChargeMoveEffect>();
         if (chargeMoveEffect != null && chargeMoveEffect.MoveName == move.UseMove.Name)
diff --git a/Plugins/PkmnLib.Plugin.Gen7/Scripts/Moves/Curse.cs b/Plugins/PkmnLib.Plugin.Gen7/Scripts/Moves/Curse.cs
index 39ae511..3478291 100644
--- a/Plugins/PkmnLib.Plugin.Gen7/Scripts/Moves/Curse.cs
+++ b/Plugins/PkmnLib.Plugin.Gen7/Scripts/Moves/Curse.cs
@@ -16,7 +16,7 @@ public class Curse : Script
             return;
         if (move.User.Types.Contains(ghostType))
         {
-            move.User.Damage(move.User.CurrentHealth / 2, DamageSource.Misc);
+            move.User.Damage(move.User.CurrentHealth / 2, DamageSource.Misc, forceDamage: true);
             if (move.User.CurrentHealth == 0)
                 return;
             target.Volatile.Add(new GhostCurseEffect(target));
diff --git a/Plugins/PkmnLib.Plugin.Gen7/Scripts/Moves/Drain.cs b/Plugins/PkmnLib.Plugin.Gen7/Scripts/Moves/Drain.cs
index 9a9474f..fa16e75 100644
--- a/Plugins/PkmnLib.Plugin.Gen7/Scripts/Moves/Drain.cs
+++ b/Plugins/PkmnLib.Plugin.Gen7/Scripts/Moves/Drain.cs
@@ -23,21 +23,15 @@ public class Drain : Script
         if (move.User.HasHeldItem("big_root"))
             healed = (uint)(healed * 1.3f);
         var invert = false;
-        var parameters = new Dictionary<StringKey, object?>
-        {
-            { "user", user },
-            { "target", target },
-            { "damage", damage },
-            { "healed", healed },
-            { "invert", invert },
-        };
-        target.RunScriptHook(x => x.CustomTrigger(CustomTriggers.ModifyDrain, parameters));
-        if (parameters.TryGetValue("invert", out var invertObj) && invertObj is bool invertBool)
-            invert = invertBool;
+
+        var args = new CustomTriggers.ModifyDrainArgs(move, target, hit, damage, healed, invert);
+        target.RunScriptHook(x => x.CustomTrigger(CustomTriggers.ModifyDrain, args));
+        invert = args.Invert;
+        healed = args.Healed;
 
         if (invert)
         {
-            user.Damage(damage, DamageSource.Misc);
+            user.Damage(healed, DamageSource.Misc);
         }
         else
         {
diff --git a/Plugins/PkmnLib.Plugin.Gen7/Scripts/Moves/DreamEater.cs b/Plugins/PkmnLib.Plugin.Gen7/Scripts/Moves/DreamEater.cs
index 32202cc..721bd11 100644
--- a/Plugins/PkmnLib.Plugin.Gen7/Scripts/Moves/DreamEater.cs
+++ b/Plugins/PkmnLib.Plugin.Gen7/Scripts/Moves/DreamEater.cs
@@ -19,22 +19,14 @@ public class DreamEater : Script
         if (move.User.HasHeldItem("big_root"))
             healed = (uint)(healed * 1.3f);
 
-        var invert = false;
-        var parameters = new Dictionary<StringKey, object?>
-        {
-            { "user", user },
-            { "target", target },
-            { "damage", damage },
-            { "healed", healed },
-            { "invert", invert },
-        };
-        target.RunScriptHook(x => x.CustomTrigger(CustomTriggers.ModifyDrain, parameters));
-        if (parameters.TryGetValue("invert", out var invertObj) && invertObj is bool invertBool)
-            invert = invertBool;
+        var args = new CustomTriggers.ModifyDrainArgs(move, target, hit, damage, healed, false);
+        target.RunScriptHook(x => x.CustomTrigger(CustomTriggers.ModifyDrain, args));
+        var invert = args.Invert;
+        healed = args.Healed;
 
         if (invert)
         {
-            user.Damage(damage, DamageSource.Misc);
+            user.Damage(healed, DamageSource.Misc);
         }
         else
         {
diff --git a/Plugins/PkmnLib.Plugin.Gen7/Scripts/Moves/HealPercent.cs b/Plugins/PkmnLib.Plugin.Gen7/Scripts/Moves/HealPercent.cs
index 4e6480d..8230286 100644
--- a/Plugins/PkmnLib.Plugin.Gen7/Scripts/Moves/HealPercent.cs
+++ b/Plugins/PkmnLib.Plugin.Gen7/Scripts/Moves/HealPercent.cs
@@ -19,6 +19,10 @@ public class HealPercent : Script
     /// <inheritdoc />
     public override void OnSecondaryEffect(IExecutingMove move, IPokemon target, byte hit)
     {
-        target.Heal((uint)(move.User.BoostedStats.Hp * _healPercent));
+        var args = new CustomTriggers.ModifyHealPercentArgs(move, target, hit, _healPercent);
+        move.RunScriptHook(x => x.CustomTrigger(CustomTriggers.ModifyHealPercent, args));
+        var healPercent = args.HealPercent;
+
+        target.Heal(target.BoostedStats.Hp.MultiplyOrMax(healPercent));
     }
 }
\ No newline at end of file
diff --git a/Plugins/PkmnLib.Plugin.Gen7/Scripts/Moves/LightScreen.cs b/Plugins/PkmnLib.Plugin.Gen7/Scripts/Moves/LightScreen.cs
index a8a6016..16fa1cb 100644
--- a/Plugins/PkmnLib.Plugin.Gen7/Scripts/Moves/LightScreen.cs
+++ b/Plugins/PkmnLib.Plugin.Gen7/Scripts/Moves/LightScreen.cs
@@ -13,13 +13,9 @@ public class LightScreen : Script
         if (battleData == null)
             return;
 
-        var turns = 5;
-        var dict = new Dictionary<StringKey, object?>
-        {
-            { "duration", turns },
-        };
-        move.RunScriptHook(x => x.CustomTrigger(CustomTriggers.LightScreenNumberOfTurns, dict));
-        turns = (int)dict.GetOrDefault("duration", turns)!;
+        var args = new CustomTriggers.LightScreenNumberOfTurnsArgs(move, 5);
+        move.RunScriptHook(x => x.CustomTrigger(CustomTriggers.LightScreenNumberOfTurns, args));
+        var turns = args.Duration;
 
         battleData.BattleSide.VolatileScripts.StackOrAdd(ScriptUtils.ResolveName<LightScreenEffect>(),
             () => new LightScreenEffect(turns));
diff --git a/Plugins/PkmnLib.Plugin.Gen7/Scripts/Moves/Reflect.cs b/Plugins/PkmnLib.Plugin.Gen7/Scripts/Moves/Reflect.cs
index 5780b5c..5058b75 100644
--- a/Plugins/PkmnLib.Plugin.Gen7/Scripts/Moves/Reflect.cs
+++ b/Plugins/PkmnLib.Plugin.Gen7/Scripts/Moves/Reflect.cs
@@ -12,12 +12,10 @@ public class Reflect : Script
         if (battleData is null)
             return;
         var numberOfTurns = 5;
-        var dict = new Dictionary<StringKey, object?>
-        {
-            { "duration", numberOfTurns },
-        };
-        move.User.RunScriptHook(x => x.CustomTrigger(CustomTriggers.ReflectNumberOfTurns, dict));
-        numberOfTurns = (int)dict.GetOrDefault("duration", numberOfTurns)!;
+
+        var args = new CustomTriggers.ReflectNumberOfTurnsArgs(move, numberOfTurns);
+        move.User.RunScriptHook(x => x.CustomTrigger(CustomTriggers.ReflectNumberOfTurns, args));
+        numberOfTurns = args.Duration;
 
         battleData.BattleSide.VolatileScripts.Add(new Side.ReflectEffect(numberOfTurns));
     }
diff --git a/Plugins/PkmnLib.Plugin.Gen7/Scripts/Moves/Whirlpool.cs b/Plugins/PkmnLib.Plugin.Gen7/Scripts/Moves/Whirlpool.cs
index a456b51..af9b84b 100644
--- a/Plugins/PkmnLib.Plugin.Gen7/Scripts/Moves/Whirlpool.cs
+++ b/Plugins/PkmnLib.Plugin.Gen7/Scripts/Moves/Whirlpool.cs
@@ -14,14 +14,10 @@ public class Whirlpool : Script
         {
             var turns = move.Battle.Random.GetInt(4, 6);
             var damagePercent = 0.125f;
-            var parameters = new Dictionary<StringKey, object?>
-            {
-                { "number_of_turns", turns },
-                { "damage_percent", damagePercent },
-            };
-            move.RunScriptHook(x => x.CustomTrigger(CustomTriggers.Whirlpool, parameters));
-            turns = parameters.GetValueOrDefault("number_of_turns", turns) as int? ?? turns;
-            damagePercent = parameters.GetValueOrDefault("damage_percent", damagePercent) as float? ?? damagePercent;
+            var args = new CustomTriggers.WhirlpoolArgs(move, target, hit, turns, damagePercent);
+            move.RunScriptHook(x => x.CustomTrigger(CustomTriggers.Whirlpool, args));
+            turns = args.Turns;
+            damagePercent = args.DamagePercent;
             whirlpoolEffect.AddTargetedPokemon(target, turns, damagePercent);
         }
     }
diff --git a/Plugins/PkmnLib.Plugin.Gen7/Scripts/Pokemon/DestinyBondEffect.cs b/Plugins/PkmnLib.Plugin.Gen7/Scripts/Pokemon/DestinyBondEffect.cs
index 4866b47..5e5b5c5 100644
--- a/Plugins/PkmnLib.Plugin.Gen7/Scripts/Pokemon/DestinyBondEffect.cs
+++ b/Plugins/PkmnLib.Plugin.Gen7/Scripts/Pokemon/DestinyBondEffect.cs
@@ -10,7 +10,7 @@ public class DestinyBondEffect : Script
         {
             if (pokemon.BattleData?.Battle.ChoiceQueue?.LastRanChoice is not IMoveChoice lastChoice)
                 return;
-            lastChoice.User.Damage(lastChoice.User.BoostedStats.Hp * 10, DamageSource.Misc);
+            lastChoice.User.Damage(lastChoice.User.BoostedStats.Hp * 10, DamageSource.Misc, forceDamage: true);
         }
     }
 
diff --git a/Plugins/PkmnLib.Plugin.Gen7/Scripts/Pokemon/ProtectionEffectScript.cs b/Plugins/PkmnLib.Plugin.Gen7/Scripts/Pokemon/ProtectionEffectScript.cs
index e2fc3ee..d8d7a89 100644
--- a/Plugins/PkmnLib.Plugin.Gen7/Scripts/Pokemon/ProtectionEffectScript.cs
+++ b/Plugins/PkmnLib.Plugin.Gen7/Scripts/Pokemon/ProtectionEffectScript.cs
@@ -11,17 +11,9 @@ public class ProtectionEffectScript : Script
 
         if (!executingMove.UseMove.HasFlag("protect"))
             return;
-        var bypass = false;
-        var parameters = new Dictionary<StringKey, object?>
-        {
-            { "target", target },
-            { "move", executingMove },
-            { "hitIndex", hitIndex },
-            { "bypass", bypass },
-        };
-        executingMove.User.RunScriptHook(x => x.CustomTrigger(CustomTriggers.BypassProtection, parameters));
-        bypass = parameters.GetValueOrDefault("bypass", false) as bool? ?? false;
-        if (bypass)
+        var args = new CustomTriggers.BypassProtectionArgs(executingMove, target, hitIndex, false);
+        executingMove.User.RunScriptHook(x => x.CustomTrigger(CustomTriggers.BypassProtection, args));
+        if (args.Bypass)
             return;
 
         block = true;
diff --git a/Plugins/PkmnLib.Plugin.Gen7/Scripts/Pokemon/SubstituteEffect.cs b/Plugins/PkmnLib.Plugin.Gen7/Scripts/Pokemon/SubstituteEffect.cs
index 7890e1c..e5de7fc 100644
--- a/Plugins/PkmnLib.Plugin.Gen7/Scripts/Pokemon/SubstituteEffect.cs
+++ b/Plugins/PkmnLib.Plugin.Gen7/Scripts/Pokemon/SubstituteEffect.cs
@@ -11,17 +11,9 @@ public class SubstituteEffect(uint health) : Script
         if (executingMove.UseMove.HasFlag("ignore-substitute"))
             return;
 
-        var bypass = false;
-        var parameters = new Dictionary<StringKey, object?>
-        {
-            { "target", target },
-            { "move", executingMove },
-            { "hitIndex", hitIndex },
-            { "bypass", bypass },
-        };
-        executingMove.User.RunScriptHook(x => x.CustomTrigger(CustomTriggers.BypassProtection, parameters));
-        bypass = parameters.GetValueOrDefault("bypass", false) as bool? ?? false;
-        if (bypass)
+        var args = new CustomTriggers.BypassSubstituteArgs(executingMove, target, hitIndex, false);
+        executingMove.User.RunScriptHook(x => x.CustomTrigger(CustomTriggers.BypassSubstitute, args));
+        if (args.Bypass)
             return;
 
         block = true;
diff --git a/Plugins/PkmnLib.Plugin.Gen7/Scripts/Status/Sleep.cs b/Plugins/PkmnLib.Plugin.Gen7/Scripts/Status/Sleep.cs
index e2c0d7c..eeb8376 100644
--- a/Plugins/PkmnLib.Plugin.Gen7/Scripts/Status/Sleep.cs
+++ b/Plugins/PkmnLib.Plugin.Gen7/Scripts/Status/Sleep.cs
@@ -22,13 +22,9 @@ public class Sleep : Script
         {
             // 1-3 turns of sleep
             Turns = battleData.Battle.Random.GetInt(1, 4);
-            source.RunScriptHook(x => x.CustomTrigger(CustomTriggers.ModifySleepTurns,
-                new Dictionary<StringKey, object?>
-                {
-                    { "pokemon", pokemon },
-                    { "turns", Turns },
-                }));
-            Turns = Math.Max(1, Turns);
+            var args = new CustomTriggers.ModifySleepTurnsArgs(pokemon, Turns);
+            source.RunScriptHook(x => x.CustomTrigger(CustomTriggers.ModifySleepTurns, args));
+            Turns = Math.Max(1, args.Turns);
         }
     }
 
@@ -45,14 +41,9 @@ public class Sleep : Script
         if (move.UseMove.HasFlag("usable_while_asleep"))
             return;
 
-        var bypass = false;
-        var pars = new Dictionary<StringKey, object?>
-        {
-            { "bypass_sleep", bypass },
-        };
-        move.RunScriptHook(x => x.CustomTrigger(CustomTriggers.BypassSleep, pars));
-        bypass = pars.GetValueOrDefault("bypass_sleep", false) as bool? ?? false;
-        if (bypass)
+        var args = new CustomTriggers.BypassSleepArgs(move, false);
+        move.RunScriptHook(x => x.CustomTrigger(CustomTriggers.BypassSleep, args));
+        if (args.Bypass)
             return;
         prevent = true;
     }
diff --git a/Plugins/PkmnLib.Plugin.Gen7/Scripts/Weather/Hail.cs b/Plugins/PkmnLib.Plugin.Gen7/Scripts/Weather/Hail.cs
index f5a93c2..2aa53a4 100644
--- a/Plugins/PkmnLib.Plugin.Gen7/Scripts/Weather/Hail.cs
+++ b/Plugins/PkmnLib.Plugin.Gen7/Scripts/Weather/Hail.cs
@@ -29,12 +29,9 @@ public class Hail : Script, ILimitedTurnsScript
                     continue;
                 if (pokemon.Types.Contains(iceType))
                     continue;
-                var ignoresHail = false;
-                pokemon.RunScriptHook(x => x.CustomTrigger(CustomTriggers.IgnoreHail, new Dictionary<StringKey, object?>
-                {
-                    { "ignoresHail", ignoresHail },
-                }));
-                if (ignoresHail)
+                var args = new CustomTriggers.IgnoreHailArgs(pokemon);
+                pokemon.RunScriptHook(x => x.CustomTrigger(CustomTriggers.IgnoreHail, args));
+                if (args.Ignore)
                     continue;
 
                 var maxHealth = pokemon.BoostedStats.Hp;
diff --git a/Plugins/PkmnLib.Plugin.Gen7/Scripts/Weather/HarshSunlight.cs b/Plugins/PkmnLib.Plugin.Gen7/Scripts/Weather/HarshSunlight.cs
index a83e0e4..db0d8c7 100644
--- a/Plugins/PkmnLib.Plugin.Gen7/Scripts/Weather/HarshSunlight.cs
+++ b/Plugins/PkmnLib.Plugin.Gen7/Scripts/Weather/HarshSunlight.cs
@@ -24,17 +24,15 @@ public class HarshSunlight : Script
     }
 
     /// <inheritdoc />
-    public override void CustomTrigger(StringKey eventName, IDictionary<StringKey, object?>? parameters)
+    public override void CustomTrigger(StringKey eventName, ICustomTriggerArgs args)
     {
-        if (eventName == CustomTriggers.BypassChargeMove)
+        if (eventName != CustomTriggers.BypassChargeMove)
+            return;
+        if (args is not CustomTriggers.BypassChargeMoveArgs bypassArgs)
+            return;
+        if (bypassArgs.Move.UseMove.Name == "solar_beam" || bypassArgs.Move.UseMove.Name == "solar_blade")
         {
-            if (parameters == null || !parameters.TryGetValue("move", out var moveObj) ||
-                moveObj is not IExecutingMove move)
-                return;
-            if (move.UseMove.Name == "solar_beam" || move.UseMove.Name == "solar_blade")
-            {
-                parameters["bypassCharge"] = true;
-            }
+            bypassArgs.Bypass = true;
         }
     }