Zygarde GX (SM122) [Sun & Moon: Black Star Promos] SM152 this card's ATK becomes double

this card's ATK becomes double that opponent's monster's original ATK until the end of the Damage Step

Set: Shadows in Valhalla Card type: Normal Spell Rarity: Secret Rare Special Summon any number of “Valkyrie” monsters with different names from your hand

Set: Dark Beginning 2 Card type: Continuous Spell Rarity: Common Attack: 0 Defense: 0 No monsters on the field cannot attack during the same turn that they are Normal summoned

Set: Galactic Overlord Card type: Xyz/Effect Monster Rarity: Ultra Rare Attack: 2800 Defense: 2400 2 Level 6 monsters Once per turn

Set: The Dark Illusion Card type: Xyz/Effect Monster Rarity: Super Rare Attack: 2300 Defense: 2800 2 Level 7 Spellcaster-Type monsters While this card has Xyz Material

Zygarde GX (SM122) [Sun & Moon: Black Star Promos] SM152 this card's ATK becomes doubleSet: Sun & Moon: Black Star Promos Type: Fighting Rarity: Black Star Promo Retreat cost: Colorless,Colorless