Bubbling Cauldron is a uncommon Artifact card from Iconic Masters (IMA), collector number 213. Current market price: $0.15 (foil $0.49), TCGplayer market prices via Scryfall.
{1}, {T}, Sacrifice a creature: You gain 4 life. {1}, {T}, Sacrifice a creature named Festering Newt: Each opponent loses 4 life. You gain life equal to the life lost this way.