Shuriken is a uncommon Artifact — Equipment card from Betrayers of Kamigawa (BOK), collector number 160. Current market price: $0.31 (foil $2.86), TCGplayer market prices via Scryfall.
Equipped creature has "{T}, Unattach Shuriken: Shuriken deals 2 damage to target creature. That creature's controller gains control of Shuriken unless it was unattached from a Ninja." Equip {2} ({2}: Attach to target creature you control. Equip only as a sorcery.)