Dunbarrow Revivalist is a uncommon Creature — Human Warlock card from Alchemy: Wilds of Eldraine (YWOE), collector number 7.
Bargain When Dunbarrow Revivalist enters, you get a one-time boon with "When one or more creatures enter under your control, create a Wicked Role token attached to one of them." Then if Dunbarrow Revivalist was bargained, return a creature card from your graveyard to your hand.