Experimental Confectioner is a uncommon Creature — Human Peasant card from Wilds of Eldraine (WOE), collector number 314. Current market price: $7.29 (foil $8.60), TCGplayer market prices via Scryfall.
When this creature enters, create a Food token. (It's an artifact with "{2}, {T}, Sacrifice this token: You gain 3 life.") Whenever you sacrifice a Food, create a 1/1 black Rat creature token with "This token can't block."