Cannot be Normal Summoned/Set. Must first be Special Summoned with "Max Metalmorph" that was activated by Tributing a Level 5 or higher Dragon 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. When your opponent activates a card or effect (Quick Effect): You can negate the activation, then you can inflict damage to your opponent equal to the original ATK of 1 Attack Position monster your opponent controls. You can only use each effect of "Red-Eyes Black Fullmetal Dragon" once per turn.