Diregraf Rebirth is a uncommon Sorcery card from Innistrad: Double Feature (DBL), collector number 220. Current market price: $0.35 (foil $1.27), TCGplayer market prices via Scryfall.
This spell costs {1} less to cast for each creature that died this turn. Return target creature card from your graveyard to the battlefield. Flashback {5}{B}{G} (You may cast this card from your graveyard for its flashback cost. Then exile it.)