Finishes the last few moves

Plugins/PkmnLib.Plugin.Gen7/Scripts/Pokemon/WishEffect.cs

@@ -0,0 +1,35 @@
+namespace PkmnLib.Plugin.Gen7.Scripts.Pokemon;
+
+[Script(ScriptCategory.Pokemon, "wish")]
+public class WishEffect : Script
+{
+    private IPokemon? _pokemon;
+    private bool _hasDoneFirstTurn;
+
+    /// <inheritdoc />
+    public override void OnAddedToParent(IScriptSource source)
+    {
+        if (source is not IPokemon pokemon)
+        {
+            throw new InvalidOperationException("Wish script can only be added to a Pokemon.");
+        }
+        _pokemon = pokemon;
+    }
+
+    /// <inheritdoc />
+    public override void OnEndTurn(IBattle battle)
+    {
+        if (_pokemon == null)
+            return;
+        if (!_hasDoneFirstTurn)
+        {
+            _hasDoneFirstTurn = true;
+            return;
+        }
+
+        if (_pokemon.BattleData?.IsOnBattlefield == true)
+        {
+            _pokemon.Heal(_pokemon.MaxHealth / 2);
+        }
+    }
+}