Doom Foretold is a rare Enchantment card from Throne of Eldraine (ELD), collector number 187. Current market price: $0.30 (foil $0.30), TCGplayer market prices via Scryfall.
At the beginning of each player's upkeep, that player sacrifices a nonland, nontoken permanent of their choice. If that player can't, they discard a card, they lose 2 life, you draw a card, you gain 2 life, you create a 2/2 white Knight creature token with vigilance, then you sacrifice this enchantment.