More moves implemented

PkmnLib.Dynamic/Models/BattleFlow/TurnRunner.cs

@@ -71,7 +71,10 @@ public static class TurnRunner
         }
     }
 
-    private static void ExecuteChoice(IBattle battle, ITurnChoice choice)
+    /// <summary>
+    /// Runs a single choice in a battle.
+    /// </summary>
+    public static void ExecuteChoice(IBattle battle, ITurnChoice choice)
     {
         if (choice is IPassChoice)
             return;

PkmnLib.Dynamic/Models/Pokemon.cs

@@ -737,6 +737,13 @@ public class PokemonImpl : ScriptSource, IPokemon
     /// <inheritdoc />
     public IItem? RemoveHeldItem()
     {
+        if (HeldItem is not null)
+        {
+            if (HeldItem.Category == ItemCategory.FormChanger)
+            {
+                return null;
+            }
+        }
         var previous = HeldItem;
         HeldItem = null;
         return previous;