Diminisher Witch is a common Creature — Human Warlock card from Wilds of Eldraine (WOE), collector number 46. Current market price: $0.18 (foil $0.23), TCGplayer market prices via Scryfall.
Bargain (You may sacrifice an artifact, enchantment, or token as you cast this spell.) When this creature enters, if it was bargained, create a Cursed Role token attached to target creature an opponent controls. (If you control another Role on it, put that one into the graveyard. Enchanted creature is 1/1.)