Formatorium

The bedroom doors flew open as the younger princess stalked angrily back from her latest search of the Castle of the Two Sisters. "Sister, you move against me," Princess Luna muttered to herself. "You're keeping the Shapers hidden from me! You want Equestria for yourself. You want to use your precious little Shapers to bend Equestria to your will, and you thought I wouldn't suspect!"
She gathered some belongings into a pair of saddlebags and levitated them onto her back.
"Well, I'm going to find a power greater than you or the Shapers! Then we'll see who's really fit to bring harmony to Equestria, 'Sister'!"
Luna flew off into the night.