Undead Warchief [Planechase] XY178 the equipped monster cannot be

the equipped monster cannot be destroyed by battle or by card effects

You can only use this effect of "Metalfoes Vanisher" once per turn

or 1 monster that mentions it

Set: Return of the Duelist Card type: Xyz/Effect Monster Rarity: Ultra Rare Attack: 2400 Defense: 1500 2 Level 5 monsters Once per turn: You can detach 1 Xyz Material from this card to target 1 face-up monster your opponent controls

Undead Warchief [Planechase] XY178 the equipped monster cannot beSet: Planechase Type: Creature Zombie Rarity: Uncommon Cost: {2}{B}{B} Zombie spells you cast cost {1} less to cast. Zombie creatures you control get +2 +1. It has the strength of seven men. In fact, it used to be seven men.