Mask of the Jadecrafter is a uncommon Artifact card from The Brothers' War (BRO), collector number 201. Current market price: $0.08 (foil $0.16), TCGplayer market prices via Scryfall.
{X}, {T}, Sacrifice this artifact: Create an X/X colorless Golem artifact creature token. Activate only as a sorcery. Unearth {2}{G} ({2}{G}: Return this card from your graveyard to the battlefield. Exile it at the beginning of the next end step or if it would leave the battlefield. Unearth only as a sorcery.)