Must first be Special Summoned with "Max Metalmorph" that was 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.

Twice per turn, when your opponent activates a monster effect, or Spell Card or effect (Quick Effect): You can target 1 face-up monster your opponent controls; destroy it.