Undead Warchief [Planechase] XY178 if this card battles a

if this card battles a Special Summoned monster: You can make this card's ATK become double its current ATK until the end of the Damage Step

select 1 card from it

You can Tribute 1 Dinosaur monster

• Add 1 "Dark Magic Attack" or "Thousand Knives" from your Deck to your hand

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 if this card battles aSet: 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.