Fix enemy cost calculation again

Assets/Scripts/Fighters/Enemy.cs

@@ -73,8 +73,6 @@ public abstract class Enemy : Fighter
     {
         base.OnDestroy();
         RoundController.instance.placedEnemies.Remove(this);
-        // Not ideal but meh, no time
-        DragDestroyController.instance.listeners.ForEach(l => l.OnEnemyDeleted(gameObject, opponentType));
     }
 
 }

Assets/Scripts/UI/OpponentDragSpawner.cs

@@ -86,6 +86,7 @@ public class OpponentDragSpawner : MonoBehaviour, IRoundCallback, IManaChangeCal
                 placedOpponentCount++;
             }
         }
+        UpdateDisplayStates();
     }
 
     public void OnEnemyPlaced(GameObject enemy, Opponent opponent, bool validPosition)
@@ -121,6 +122,8 @@ public class OpponentDragSpawner : MonoBehaviour, IRoundCallback, IManaChangeCal
 
     public void OnRoundEnd(bool won)
     {
+        // To make sure this is called _after_ enemies might have destroyed itself in this callback
+        Invoke(nameof(RecalculatePlacedOpponentsCount), 0.01f);
         UpdateDisplayStates();
     }