Greninja V-Union (SWSH156) [Sword & Shield: Black Star Promos] Sneak Preview Series 1 Set: Number Hunters Card type:

Set: Number Hunters Card type: Effect Monster Rarity: Super Rare Attack: 300 Defense: 100 When this card is Special Summoned by the effect of a "Heroic Challenger" monster: You can add 1 "Heroic Challenger" monster from your Deck to your hand

Set: HeartGold & SoulSilver: Base Set Type: Lightning Rarity: Holo Rare Retreat cost: 0

also all DARK monsters on the field lose 400 ATK/DEF

(Xyz Materials attached to that monster also become Xyz Materials on this card

Greninja V-Union (SWSH156) [Sword & Shield: Black Star Promos] Sneak Preview Series 1 Set: Number Hunters Card type:Set: Sword & Shield: Black Star Promos Type: Water Rarity: Promo Retreat cost: Colorless,Colorless