Reshiram & Zekrom GX (259/236) [Sun & Moon: Cosmic Eclipse] XY27 its ATK becomes equal to

its ATK becomes equal to the current ATK of the monster on the field that has the highest ATK

Return 1 card on your opponent''s side of the field to the top of the owner's Deck

When Special Summoned this way: Add 1 Spell Card from your Deck to your hand

Set: Fossil 1st Edition Type: Colorless Rarity: Holo Rare Retreat cost: Colorless

Set: The Lost Art Promotion Card type: Continuous Trap Rarity: Ultra Rare Activate this card by targeting 1 monster in your GY

Reshiram & Zekrom GX (259/236) [Sun & Moon: Cosmic Eclipse] XY27 its ATK becomes equal toSet: Sun & Moon: Cosmic Eclipse Type: Dragon Rarity: Secret Rare Retreat cost: Colorless,Colorless,Colorless