Hour of Eternity is a rare Sorcery card from Hour of Devastation Promos (PHOU), collector number 36s. Current market price: — (foil $0.51), TCGplayer market prices via Scryfall.
Exile X target creature cards from your graveyard. For each card exiled this way, create a token that's a copy of that card, except it's a 4/4 black Zombie.