Booster Battle bis eina chotzt

Exile this card and play a booster battle with your opponent.
If you win the battle, remove Booster Battle bis
eina chotzt from the game, then exile a card from
one of the used boosters. You may cast the chosen card from exile. Otherwise, put Booster Battle bis eina chotzt into your opponent`s exile.
You may cast this card from exile.