Demonic Pact is a mythic Enchantment card from Foundations (FDN), collector number 602. Current market price: $0.32, TCGplayer market prices via Scryfall.
At the beginning of your upkeep, choose one that hasn't been chosen — • This enchantment deals 4 damage to any target and you gain 4 life. • Target opponent discards two cards. • Draw two cards. • You lose the game.