Incoming Machine! (ROTA-EN050) [Rage of the Abyss]

Add 1 monster that mentions "Max Metalmorph" or 1 "Metalmorph" Trap from your Deck or GY to your hand. If you control a "Metalmorph" Trap: You can banish this card from your GY, then target 1 Defense Position monster your opponent controls; change it to face-up Attack Position. You can only use this effect of "Incoming Machine!" once per turn.