Midnight Snack is a uncommon Enchantment card from Foundations (FDN), collector number 65. Current market price: $0.23 (foil $0.31), TCGplayer market prices via Scryfall.
Raid — At the beginning of your end step, if you attacked this turn, create a Food token. (It's an artifact with "{2}, {T}, Sacrifice this token: You gain 3 life.") {2}{B}, Sacrifice this enchantment: Target opponent loses X life, where X is the amount of life you gained this turn.