Z-Metal Tank is a Rare Union Effect Monster card from Yu-Gi-Oh! (Dark Revelation Volume 1, DR1). Current market price: $0.17.
Rare
Dark Revelation Volume 1 (DR1)
Card Text
Once per turn, you can either: Target 1 "X-Head Cannon" or "Y-Dragon Head" you control; equip this card to that target, OR: Unequip this card and Special Summon it. A monster equipped with this card gains 600 ATK/DEF, also if the equipped monster would be destroyed by battle or card effect, destroy this card instead.
