Kitesail is a uncommon Artifact — Equipment card from Magic 2013 (M13), collector number 208. Current market price: $0.11 (foil $0.08), TCGplayer market prices via Scryfall.
Equipped creature gets +1/+0 and has flying. Equip {2} ({2}: Attach to target creature you control. Equip only as a sorcery.)