Amulet of Vigor [Mystery Booster] XY83 during damage calculation (Quick Effect):

during damage calculation (Quick Effect): You can make this card's ATK/DEF become equal to the ATK of the monster on the field with the highest ATK (your choice

Set: Theros Beyond Death Prerelease Promos Type: Enchantment Creature — Spirit Rarity: Rare Cost: {1}{W} First strike

Set: Premium Pack 2 Card type: Continuous Spell Rarity: Secret Rare Attack: 0 Defense: 0 Once per turn

Set: Battle Pack: Epic Dawn Card type: Effect Monster Rarity: Starfoil Rare Attack: 1800 Defense: 1000 When this card is Normal Summoned: Target 1 Set card your opponent controls

then Special Summon in Attack Position

Amulet of Vigor [Mystery Booster] XY83 during damage calculation (Quick Effect):Set: Mystery Booster Type: Artifact Rarity: Rare Cost: {1} Whenever a permanent enters the battlefield tapped and under your control, untap it. "After years of study, I've learned an important lesson: the relics we watch may be watching us back." Anowon, the Ruin Sage