Pirate's Cutlass is a common Artifact — Equipment card from Jumpstart (JMP), collector number 477. Current market price: $0.14, TCGplayer market prices via Scryfall.
When this Equipment enters, attach it to target Pirate you control. Equipped creature gets +2/+1. Equip {2} ({2}: Attach to target creature you control. Equip only as a sorcery.)