Golden Urn is a common Artifact card from Scars of Mirrodin (SOM), collector number 158. Current market price: $0.25 (foil $0.39), TCGplayer market prices via Scryfall.
At the beginning of your upkeep, you may put a charge counter on this artifact. {T}, Sacrifice this artifact: You gain life equal to the number of charge counters on this artifact.