Skyblinder Staff is a common Artifact — Equipment card from Gatecrash (GTC), collector number 238. Current market price: $0.08 (foil $0.50), TCGplayer market prices via Scryfall.
Equipped creature gets +1/+0 and can't be blocked by creatures with flying. Equip {3} ({3}: Attach to target creature you control. Equip only as a sorcery.)