2 "Metalfoes" monsters
If this card is sent from the Monster Zone to the GY by a card effect: You can activate 1 of these effects;
• Target 1 "Metalfoes" monster you control; equip this card to it. It gains 1000 ATK.
• Target 1 "Metalfoes" card you control; destroy it, and if you do, Special Summon this card.
You can only use this effect of "Heavymetalfoes Amalgam" once per turn.