Supper for Spiders is a rare Instant card from The Hobbit (HOB), collector number 86. Current market price: $0.68 (foil $0.37), TCGplayer market prices via Scryfall.
Put onto the battlefield under your control all creature cards in your opponents' graveyards that were put there from the battlefield this turn. They are Food artifacts with "{2}, {T}, Sacrifice this artifact: You gain 3 life." (They lose all other types and subtypes.)