Witch's Oven is a uncommon Artifact card from The List (PLST), collector number ELD-237. Current market price: $1.58, TCGplayer market prices via Scryfall.
{T}, Sacrifice a creature: Create a Food token. If the sacrificed creature's toughness was 4 or greater, create two Food tokens instead. (They're artifacts with "{2}, {T}, Sacrifice this token: You gain 3 life.")