Z-Metal Tank

Yu-Gi-Oh Card: Z-Metal Tank
Available from these partners:
Z-Metal Tank
Type:Union Monster
Text:Once per turn, during your Main Phase, if you control this card on the field, you can equip it to your "X-Head Cannon" or "Y-Dragon Head" as an Equip Card, OR unequip the Union equipment and Special Summon this card in face-up Attack Position. While equipped to a monster by this card's effect, increase the ATK/DEF of the equipped monster by 600 points. (1 monster can only be equipped with 1 Union Monster at a time. If the equipped monster is destroyed as a result of battle, destroy this card instead.).
Printings: Dark Revelations Volume 1 (DR1-061)
Duelist Pack 2: Chazz Princeton (DP2-EN007)
Duelist Pack: Kaiba (DPKB-EN012)
Legendary Collection Kaiba Mega Pack (LCKC-EN007)
Magician's Force (MFC-006)
Structure Deck: Seto Kaiba (SDKS-EN007)