Page has some problems. Some are large with larger teeth. Some have sharp claws. Some have wings. Most are ponies. Sometimes being an alicorn is simply not worth the perks of the job, no matter how nice.
In a steampunk reimagining of the universe, Twilight Sparkle finds perhaps the one pony as lonely as she is. It's rather unfortunate that they're on the moon.
Twilight is unable to control her powers during the entrance exam to the School for Talented Unicorns, and in order to reduce the damage caused by her power surges, Celestia shrinks her down until she would later learn how to control her powers.
One mare can only take so much. Even if she is an alicorn, something has to give sooner or later, and when it does, something terrible and all-consuming will be unleashed. Twilight has reached the breaking point and arcane retribution is imminent.
In the blink of an eye, all life was wiped from the face of Equus by an abomination born of the stars. That is, all except for four immortal Princesses. Now they fight for the only thing they have left other than their grief... revenge.