Earth. Machine/Union. 1. 0/0. Once per turn, during your Main Phase, you can equip this card to a monster you control as an Equip Card, OR unequip it to Special Summon this card in face-up Attack Position. The equipped monster loses 500 ATK and DEF. If the equipped monster destroys an opponent's monster by battle, destroy all monsters your opponent controls with the same Type as the destroyed monster. (A monster can only be equipped with 1 Union Monster at a time. If the equipped monster would be destroyed, destroy this card instead.)