(I'm taking a break from this story until further notice, but don't worry, I will be back as soon as I have time!)
Crystal is a changeling like no other. She is the princess of changelings; daughter of Queen Chrysalis herself. She does all she can to help her mother run the swarm, but after the failed invasion of Canterlot, she finds herself at the mercy of the enemy; ponies. Stranded in Ponyville and weak, Crystal invents a new pony to shape-shift into. Unfortunately for her, this new form looks a lot like Pinkie Pie's imaginary friend...