private static void SetAffectedBySlice(Boss boss)
 {
     StateChanger.MakeBossNormalToType(boss, TowerType.Slice);
 }
 private static void SetAffectedByWater(Boss boss)
 {
     StateChanger.MakeBossMelt(boss);
 }
 private static void SetAffectedByImpact(Boss boss)
 {
     StateChanger.MakeBossNormalToType(boss, TowerType.Impact);
 }