Shiranui Swordmaster

If this card is in your GY and you control 2 or more "Shiranui" monsters with different names: You can Special Summon this card, but banish it when it leaves the field. If this card is banished: You can target 1 Zombie monster you control; it gains 600 ATK until the end of this turn. You can only use each effect of "Shiranui Swordmaster" once per turn.