Gyarados GX (18/111) [Sun & Moon: Crimson Invasion] XY65 but the opponent's monster was

but the opponent's monster was not destroyed by the battle: You can make the opponent's monster's ATK 0 (even after this card leaves the field or the monster becomes unaffected by card effects)

during either player's turn: You can target 1 Special Summoned monster your opponent controls in face-up Attack Position

Set: New Awakening Pre-Release Cards Card type: Digi-Egg Rarity: Uncommon Digi type: Lesser Form: In-Training [Opponent's Turn] While all of your Digimon are suspended

Set: X Record Pre-Release Promos Card type: Tamer Rarity: Rare Play Cost: 4 [Start of Your Turn] If you have 3 or fewer security cards

Gyarados GX (18/111) [Sun & Moon: Crimson Invasion] XY65 but the opponent's monster wasSet: Sun & Moon: Crimson Invasion Type: Water Rarity: Ultra Rare Retreat cost: Colorless,Colorless,Colorless,Colorless