Metalzoa X

Cannot be Normal Summoned/Set. Must first be Special Summoned with "Enhanced Metalmorph" activated by Tributing a Level 5 or higher Fiend monster. You can reveal this card in your hand; Set 1 "Metalmorph" Trap from your Deck, and if you do, shuffle this card into the Deck. You can only use this effect of "Metalzoa X" once per turn. Up to twice per turn, when your opponent activates a Spell Card or effect, or a monster effect (Quick Effect): You can target 1 face-up monster they control; destroy it.