AP McCoy recorded his first winner of his final Cheltenham Festival before retirement on Uxizandre (16/1) in the Grade One Ryanair Chase.
Alan King's seven-year-old, wearing a visor for the first time time, jumped his rivals ragged on the return to fast ground and found plenty for pressure up the final hill to beat Ma Filleule by five lengths.
Well-backed favourite Don Cossack made several mistakes along the way but ran on to snatch third from Eduard.