Princess Luna, the Princess of the Night, and co-founder of Equestria, is going through a deep depression. She feels that she is responsible for most of Equestria's problems, and fears that she'll end up causing more in the future. To stop this from happening, Luna attempts to take her own life. But, the one pony who knows Luna better than anyone else attempts to change her mind.

Requested by Lunaisbae_1179

The Sun is dying, along with Celestia.

The Sun Princess knows of this, and decides to do anything to keep the sun alive.

Even if it means destroying all that she loves.

Sanity is critical.

And Luna is losing it.

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?

Princess Luna ordered the Tantabus to torture her dreams every night so that she would never consider returning to the dark path she once trod as Nightmare Moon.

Luna should have remembered just how difficult it was for her to obey rules before she used her own essence to create what was, in effect, a smaller, more headstrong version of herself.

The Tantabus is determined to follow the true purpose of her command, no matter the consequences, large or small.

Or very, very small.

Now with a reading by ABagOfVicodin (who is open for fanfic reading commissions)
Done to go with the episode Do Princesses Dream of Magic Sheep?

Editors: Tek, Peter, Hilltopper2, Winston, Monarch Dodora

Now on Equestria Daily