Gisa, Glorious Resurrector is a rare Legendary Creature — Human Wizard card from Innistrad: Midnight Hunt Promos (PMID), collector number 103p. Current market price: $3.67 (foil $3.88), TCGplayer market prices via Scryfall.
If a creature an opponent controls would die, exile it instead. At the beginning of your upkeep, put all creature cards exiled with Gisa onto the battlefield under your control. They gain decayed. (A creature with decayed can't block. When it attacks, sacrifice it at end of combat.)