Vigor Mortis is a uncommon Sorcery card from Duel Decks: Izzet vs. Golgari (DDJ), collector number 74. Current market price: $0.29, TCGplayer market prices via Scryfall.
Return target creature card from your graveyard to the battlefield. If {G} was spent to cast this spell, that creature enters with an additional +1/+1 counter on it.