The end of the sisters (King Sombra x Reader) | Complete

Luna is dead. Nightmare moon stands in her place.
Celestia is dead. Daybreaker stands in her place.
A pony named (y/n) is forced to work under them because of your cutie mark but you don't tell them about your power to control crystals. What will happen when you are thrown into the dungeons to work? Will a pony who was put down there be able to help? What about the plan he has to take down the two sister tirents?

Art not by me!!!!!