Amulet of Vigor [Mystery Booster] XY83 during your opponent's Battle Phase:

during your opponent's Battle Phase: You can target 1 Defense Position monster your opponent controls

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

but a different name

Amulet of Vigor [Mystery Booster] XY83 during your opponent's Battle Phase: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