Princess or Illusion and light. Not the sun. Light.
Well since Blueblood exists, there has to be another sibling to Celestia and Luna, and I guess Mirage is from… That side of the family. A minor princess Who guides ponies through visions, illusions and mirages, but sometimes, things don’t go quite according to plan, and ponies start to believe they’re connected to another.. dimension of some kind.
She’s a quite young princess and has her hooves full, trying to practice, perform her duties and keep track of her little sister Anya.