Nerva the Imprisoned Deity of Creation

[ Illusion / Fusion / Effect ] 3 "Artmegia" monsters Must first be either Fusion Summoned, or Special Summoned (from your Extra Deck) in Defense Position by Tributing 3 monsters with different Types. You can only Special Summon "Nerva the Imprisoned Deity of Creation" once per turn. Cannot be destroyed by card effects while a card is in the Field Zone. Once per turn, when you activate an "Artmegia" monster's effect (Quick Effect): You can make the activated effect become "Destroy all cards your opponent controls". ATK/ 3300 DEF/ 3300