Queen Luna of reverieraven_’s Cardverse/“The Silver Throne”

A thousand years ago, an arrogant Celestia took things too far. Luna had begun to turn her back on her sister, her envy getting the better of her. Celestia was having none of it, her immense ego turning her into Daybreaker. Thus, Luna banished her sister and became the Queen—a feat which enabled her to conquer her own fears and accept that flawed part of herself.