diff --git a/PkmnLib.Dynamic/Models/Pokemon.cs b/PkmnLib.Dynamic/Models/Pokemon.cs
index 94e2ed6..6e5ee65 100644
--- a/PkmnLib.Dynamic/Models/Pokemon.cs
+++ b/PkmnLib.Dynamic/Models/Pokemon.cs
@@ -450,6 +450,8 @@ public interface IPokemonBattleData : IDeepCloneable
     void MarkItemAsConsumed(IItem itemName);
 
     uint SwitchInTurn { get; internal set; }
+
+    IBattleSide BattleSide { get; }
 }
 
 /// <inheritdoc cref="IPokemon"/>
@@ -1254,4 +1256,7 @@ public class PokemonBattleDataImpl : IPokemonBattleData
 
     /// <inheritdoc />
     public uint SwitchInTurn { get; set; }
+
+    /// <inheritdoc />
+    public IBattleSide BattleSide => Battle.Sides[SideIndex];
 }
\ No newline at end of file
diff --git a/PkmnLib.Tests/Data/Moves.json b/PkmnLib.Tests/Data/Moves.json
index 5680291..8a9fccd 100755
--- a/PkmnLib.Tests/Data/Moves.json
+++ b/PkmnLib.Tests/Data/Moves.json
@@ -6178,7 +6178,10 @@
         "protect",
         "reflectable",
         "mirror"
-      ]
+      ],
+      "effect": {
+        "name": "leech_seed"
+      }
     },
     {
       "name": "leer",
@@ -6215,7 +6218,14 @@
         "contact",
         "protect",
         "mirror"
-      ]
+      ],
+      "effect": {
+        "name": "set_status",
+        "chance": 30,
+        "parameters": {
+          "status": "paralyzed"
+        }
+      }
     },
     {
       "name": "light_of_ruin",
@@ -6229,7 +6239,13 @@
       "flags": [
         "protect",
         "mirror"
-      ]
+      ],
+      "effect": {
+        "name": "recoil",
+        "parameters": {
+          "recoil_percentage": 0.5
+        }
+      }
     },
     {
       "name": "light_screen",
@@ -6242,7 +6258,10 @@
       "category": "status",
       "flags": [
         "snatch"
-      ]
+      ],
+      "effect": {
+        "name": "light_screen"
+      }
     },
     {
       "name": "liquidation",
@@ -6257,7 +6276,14 @@
         "contact",
         "protect",
         "mirror"
-      ]
+      ],
+      "effect": {
+        "name": "change_target_defense",
+        "chance": 20,
+        "parameters": {
+          "amount": -1
+        }
+      }
     },
     {
       "name": "lock_on",
diff --git a/Plugins/PkmnLib.Plugin.Gen7/Libraries/Gen7BattleStatCalculator.cs b/Plugins/PkmnLib.Plugin.Gen7/Libraries/Gen7BattleStatCalculator.cs
index 8b7cb00..fa05f16 100644
--- a/Plugins/PkmnLib.Plugin.Gen7/Libraries/Gen7BattleStatCalculator.cs
+++ b/Plugins/PkmnLib.Plugin.Gen7/Libraries/Gen7BattleStatCalculator.cs
@@ -58,6 +58,8 @@ public class Gen7BattleStatCalculator : IBattleStatCalculator
             x => x.ChangeAccuracyModifier(executingMove, target, hitIndex, ref accuracyModifier));
         var modifiedAccuracy = (int)(moveAccuracy * accuracyModifier);
         executingMove.RunScriptHook(x => x.ChangeAccuracy(executingMove, target, hitIndex, ref modifiedAccuracy));
+        if (modifiedAccuracy == 255)
+            return 255;
         var targetEvasion = target.StatBoost.Evasion;
         var ignoreEvasion = false;
         executingMove.RunScriptHook(x => x.BypassEvasionStatBoosts(executingMove, target, hitIndex, ref ignoreEvasion));
diff --git a/Plugins/PkmnLib.Plugin.Gen7/Scripts/CustomTriggers.cs b/Plugins/PkmnLib.Plugin.Gen7/Scripts/CustomTriggers.cs
index 4083fdd..392d3f8 100644
--- a/Plugins/PkmnLib.Plugin.Gen7/Scripts/CustomTriggers.cs
+++ b/Plugins/PkmnLib.Plugin.Gen7/Scripts/CustomTriggers.cs
@@ -9,4 +9,8 @@ public static class CustomTriggers
     public static readonly StringKey BindNumberOfTurns = "bind_number_of_turns";
 
     public static readonly StringKey BindPercentOfMaxHealth = "bind_percent_of_max_health";
+
+    public static readonly StringKey IgnoreHail = "ignores_hail";
+
+    public static readonly StringKey LightScreenNumberOfTurns = "light_screen_number_of_turns";
 }
\ No newline at end of file
diff --git a/Plugins/PkmnLib.Plugin.Gen7/Scripts/Moves/LeechSeed.cs b/Plugins/PkmnLib.Plugin.Gen7/Scripts/Moves/LeechSeed.cs
new file mode 100644
index 0000000..9ed2893
--- /dev/null
+++ b/Plugins/PkmnLib.Plugin.Gen7/Scripts/Moves/LeechSeed.cs
@@ -0,0 +1,19 @@
+using System.Linq;
+using PkmnLib.Plugin.Gen7.Scripts.Pokemon;
+
+namespace PkmnLib.Plugin.Gen7.Scripts.Moves;
+
+[Script(ScriptCategory.Move, "leech_seed")]
+public class LeechSeed : Script
+{
+    /// <inheritdoc />
+    public override void OnSecondaryEffect(IExecutingMove move, IPokemon target, byte hit)
+    {
+        if (target.Types.Any(x => x.Name == "grass"))
+        {
+            move.GetHitData(target, hit).Fail();
+            return;
+        }
+        target.Volatile.Add(new LeechSeedEffect(target, move.User));
+    }
+}
\ 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
new file mode 100644
index 0000000..13f97a3
--- /dev/null
+++ b/Plugins/PkmnLib.Plugin.Gen7/Scripts/Moves/LightScreen.cs
@@ -0,0 +1,28 @@
+using System.Collections.Generic;
+using PkmnLib.Plugin.Gen7.Scripts.Side;
+using PkmnLib.Static.Utils;
+
+namespace PkmnLib.Plugin.Gen7.Scripts.Moves;
+
+[Script(ScriptCategory.Move, "light_screen")]
+public class LightScreen : Script
+{
+    /// <inheritdoc />
+    public override void OnSecondaryEffect(IExecutingMove move, IPokemon target, byte hit)
+    {
+        var battleData = move.User.BattleData;
+        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)!;
+
+        battleData.BattleSide.VolatileScripts.StackOrAdd(ScriptUtils.ResolveName<LightScreenEffect>(),
+            () => new LightScreenEffect(turns));
+    }
+}
\ No newline at end of file
diff --git a/Plugins/PkmnLib.Plugin.Gen7/Scripts/Pokemon/LeechSeedEffect.cs b/Plugins/PkmnLib.Plugin.Gen7/Scripts/Pokemon/LeechSeedEffect.cs
new file mode 100644
index 0000000..ce59aaa
--- /dev/null
+++ b/Plugins/PkmnLib.Plugin.Gen7/Scripts/Pokemon/LeechSeedEffect.cs
@@ -0,0 +1,28 @@
+namespace PkmnLib.Plugin.Gen7.Scripts.Pokemon;
+
+[Script(ScriptCategory.Pokemon, "leech_seed")]
+public class LeechSeedEffect : Script
+{
+    private readonly IPokemon _owner;
+    private readonly IPokemon _placer;
+
+    public LeechSeedEffect(IPokemon owner, IPokemon placer)
+    {
+        _owner = owner;
+        _placer = placer;
+    }
+
+    /// <inheritdoc />
+    public override void OnEndTurn(IBattle battle)
+    {
+        var damage = _owner.BoostedStats.Hp / 8;
+        if (_owner.CurrentHealth <= damage)
+            damage = _owner.CurrentHealth;
+
+        _owner.Damage(damage, DamageSource.Misc);
+        if (_owner.ActiveAbility?.Name == "liquid_ooze")
+            _placer.Damage(damage, DamageSource.Misc);
+        else
+            _placer.Heal(damage);
+    }
+}
\ No newline at end of file
diff --git a/Plugins/PkmnLib.Plugin.Gen7/Scripts/Side/LightScreenEffect.cs b/Plugins/PkmnLib.Plugin.Gen7/Scripts/Side/LightScreenEffect.cs
index a363d02..d1b238b 100644
--- a/Plugins/PkmnLib.Plugin.Gen7/Scripts/Side/LightScreenEffect.cs
+++ b/Plugins/PkmnLib.Plugin.Gen7/Scripts/Side/LightScreenEffect.cs
@@ -1,7 +1,32 @@
+using PkmnLib.Static.Moves;
+
 namespace PkmnLib.Plugin.Gen7.Scripts.Side;
 
 [Script(ScriptCategory.Side, "light_screen")]
-public class LightScreenEffect : Script
+public class LightScreenEffect(int turns) : Script
 {
-    // TODO: Implement LightScreenEffect
+    private int _turns = turns;
+
+    /// <inheritdoc />
+    public override void ChangeIncomingMoveDamage(IExecutingMove move, IPokemon target, byte hit, ref uint damage)
+    {
+        if (move.UseMove.Category != MoveCategory.Special ||
+            // Critical hits are not affected by the barrier
+            move.GetHitData(target, hit).IsCritical)
+            return;
+        var battleData = target.BattleData;
+        // If not a 1v1 battle, damage reduction is only 1/3rd.
+        if (battleData?.Battle.PositionsPerSide > 1)
+            damage = (uint)(damage * (2.0f / 3.0f));
+        else
+            damage = (uint)(damage * 0.5f);
+    }
+
+    /// <inheritdoc />
+    public override void OnEndTurn(IBattle battle)
+    {
+        _turns -= 1;
+        if (_turns <= 0)
+            RemoveSelf();
+    }
 }
\ No newline at end of file
diff --git a/Plugins/PkmnLib.Plugin.Gen7/Scripts/Weather/Hail.cs b/Plugins/PkmnLib.Plugin.Gen7/Scripts/Weather/Hail.cs
index fbdc70b..79d421b 100644
--- a/Plugins/PkmnLib.Plugin.Gen7/Scripts/Weather/Hail.cs
+++ b/Plugins/PkmnLib.Plugin.Gen7/Scripts/Weather/Hail.cs
@@ -32,10 +32,11 @@ public class Hail : Script, IWeatherScript
                 if (pokemon.Types.Contains(iceType))
                     continue;
                 var ignoresHail = false;
-                pokemon.RunScriptHook(x => x.CustomTrigger("ignores_hail", new Dictionary<StringKey, object?>()
-                {
-                    { "ignoresHail", ignoresHail },
-                }));
+                pokemon.RunScriptHook(x => x.CustomTrigger(CustomTriggers.IgnoreHail,
+                    new Dictionary<StringKey, object?>()
+                    {
+                        { "ignoresHail", ignoresHail },
+                    }));
                 if (ignoresHail)
                     continue;