Quick-Draw Katana is a common Artifact — Equipment card from Foundations (FDN), collector number 130. Current market price: $0.14 (foil $0.24), TCGplayer market prices via Scryfall.
During your turn, equipped creature gets +2/+0 and has first strike. (It deals combat damage before creatures without first strike.) Equip {2} ({2}: Attach to target creature you control. Equip only as a sorcery.)