A troubled Princess Celestia, wandering her School for Gifted Unicorns late one night, chances upon her young faithful student Twilight Sparkle, who has problems of her own:

She can't catch the Tooth Flutterpony.

What possible advice could Princess Celestia give to her upset young pupil, who is desperately trying to prove that an old ponies' tale is real?

Inspired by Skywriter's How to Remove a Unicorn Tooth (which is a much better story and you should probably go read it, if you already haven't); and, of course, Sir Terry Pratchett's Hogfather (which you should have already read, and even if you have, you should go read it again).

On a dark night filled with even darker magics, an insane cult attempts to give Nightmare Moon a body and life of her own, utterly separate from Princess Luna. But, when the spell is interrupted by Celestia, something unexpected is created.

Now, a little black alicorn filly named Nyx finds herself living under the care of Twilight Sparkle, only to be haunted by memories and emotions from her past. Is she Nightmare Moon reborn or is she simply a doppelganger with a soul and mind of her own? Can Twilight Sparkle protect Nyx from those who refuse to see past her dragon eyes and black coat?

Or, will Nyx be forced to inherit the sins that may not even be hers and become the greatest evil Equestria has ever known?

Shining Armor learns the most important tactical lesson of his life.

Audio version! https://youtu.be/YgDr0Xc6rN8

Now with a Spanish translation by Spaniard Kiwi!

Alex Meyers is a newly graduated lawyer looking for a calling. He thinks he might have found it when he lands a job at the firm of Artemis, Stella & Beat. The firm has only one (highly unusual) client, namely the AI called Celestia. Forging into totally unexplored legal territory and led by a boss who's either brilliant, crazy, or both, Alex will learn exactly how hard it is to be responsible for drawing the lines between right and wrong.

Set in the Optimalverse, so read Friendship is Optimal first

To Twilight Sparkle and Princess Celestia, it is a simple surprise visit to Canterlot. To the ponies of the Equestrian Civil Service, it is twenty-four hours of chaos, politics, weaponized dessert, politics, underhooved manipulation of media, politics, and things batrachian and tentacular. Who said bureaucracy isn't exciting?