void OnEnable()
 {
     if (arcane_bomb == null)
     {
         arcane_bomb = ArcaneBomb.singleton;
         SetRuneCostText();
     }
     SetTempVariables();
     SetRemainingShards();
     SetDmgText();
     //SetButtonInteractability();
 }
 void Awake()
 {
     singleton = this;
 }