Flying Mary, the Wandering Ghost Ship

2 Zombie monsters
You can target 1 Level 5 or higher Zombie monster in your GY or banishment; place this card face-up in your Spell & Trap Zone as a Continuous Spell, and if you do, Special Summon that monster. If this card is a Continuous Spell: You can target 1 Level 5 or higher Zombie monster you control; destroy 1 monster your opponent controls with equal or lower ATK. You can only use each effect of "Flying Mary, the Wandering Ghost Ship" once per turn.