Hey Ann, Glasswing is a weird dragon as there's no known dragon to consistently beat her but I've beaten her in the past with an Elements Dragon (blue, yellow red) and Banshee (white, blue). Also, there are regular dragons that are decent against champions like Landworm, Firemane, and Apprentice and don't sleep on high level common dragons like Air, Forest or Fire - they come in handy in a pinch.