Trick Box
If an “Entermage” monster(s) you control is destroyed by battle or a card effect and sent to the Graveyard: Target 1 monster the opponent controls; gain control of it until the End Phase, then choose 1 “Entermage” monster in your Graveyard and Special Summon it to your opponent’s side of the field. The monster Special Summoned by this effect returns to its owner’s control during the End Phase.