You can activate "Metalmorph" Traps the turn they were Set. You can only use each of the following effects of "Red-Eyes Metal Claws Dragon" once per turn. You can send 1 face-down card you control to the GY; Special Summon this card from your hand. If this card is Normal or Special Summoned, and you have "Max Metalmorph" in your field or GY: You can add 1 "Metalmorph" Trap from your Deck or GY to your hand.