Gyarados (34/108) (XY Evolutions Staff Prerelease) [XY: Black Star Promos] Versus Royal Knights Booster during damage calculation: This card

during damage calculation: This card gains ATK equal to the current ATK of the opponent's monster it is battling during that damage calculation only

return that card to the battlefield under its owner's control

with packs full of Rare cards

Set: Scarlet & Violet: Paldean Fates Type: Lightning Rarity: Shiny Rare Retreat cost: Colorless

Set: Scarlet & Violet: Paldean Fates Type: Water Rarity: Hyper Rare Retreat cost: Colorless

Gyarados (34/108) (XY Evolutions Staff Prerelease) [XY: Black Star Promos] Versus Royal Knights Booster during damage calculation: This cardSet: XY: Black Star Promos Type: Water Rarity: Promo Retreat cost: Colorless,Colorless,Colorless