Surprisingly, more abilities

Plugins/PkmnLib.Plugin.Gen7/Scripts/Abilities/SnowCloak.cs

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+namespace PkmnLib.Plugin.Gen7.Scripts.Abilities;
+
+/// <summary>
+/// Snow Cloak is an ability that raises the Pokémon's evasion during hail.
+///
+/// <see href="https://bulbapedia.bulbagarden.net/wiki/Snow_Cloak_(Ability)">Bulbapedia - Snow Cloak</see>
+/// </summary>
+[Script(ScriptCategory.Ability, "snow_cloak")]
+public class SnowCloak : Script
+{
+    /// <inheritdoc />
+    public override void ChangeIncomingAccuracy(IExecutingMove executingMove, IPokemon target, byte hitIndex,
+        ref int modifiedAccuracy)
+    {
+        // If the weather is hail, increase evasion by 20%
+        if (executingMove.Battle.WeatherName == ScriptUtils.ResolveName<Weather.Hail>())
+        {
+            modifiedAccuracy = (int)(modifiedAccuracy * 0.8f);
+        }
+    }
+
+    public override void CustomTrigger(StringKey eventName, ICustomTriggerArgs args)
+    {
+        if (eventName == CustomTriggers.IgnoreHail && args is CustomTriggers.IgnoreHailArgs hailArgs)
+            hailArgs.Ignore = true;
+    }
+}