Apocalypse Reviver, Black

/:If you have a grade 3 or greater CoroCoro vanguard with "Black" in its card name, and you do not have a unit in the Zombie state, [discard a card from hand], choose up to two grade 3 or less unit cards with different card names from your drop, call them to , and they become Zombie state until end of turn. At the end of that turn, retire those units. Your card's abilities do not activate from this call. :At the end of the battle this unit attacked, 1, choose one of your rear-guards in the Zombie state, and it.