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?

Scansion has a problem. The poems that flow from his pen at night are the most beautiful he's ever written, but he doesn't remember writing them. Drawn ever-deeper into an exchange of letters with a voice that speaks only through his work, he must discover the truth: Is the lonely, recently-returned goddess of the night reaching out to him in the only way she can, or is he chasing shadows?

* Now with a dramatic reading by Neighrator Pony! *
* Chinese translation: 女神 (Thou Goddess) by 卷耳 (estiMaDashie)! *

Holy crap you guys. What have I unleashed? Here's a sample of the word-of-mouth blogstorm that drove it to the feature box out of nowhere:
"This is the best thing I've read in a long time." –Bad Horse (rated: sitewide Top 10)
"'Thou Goddess' is magical and transcendent all the way through." –Skywriter
"[P]oetic beauty. There is scarcely a height of acclaim I would not believe it deserves." –Causal Quill (rated: sitewide Top 10)
"[C]hock full of splendid poetry … a jaw-dropping piece of prose and one of the best fics I have ever had the privilege to read." –Present Perfect (rated: sitewide Top 15)
"I shall keep this brief, because I must finish weeping before lunch is over. This is gorgeous, and has utterly deserved every accolade it has received." –Blue_Paladin42 (rated: sitewide Top 5)

Winner of AugieDog's "Nocturnes" Luna story contest! | Featured on EqD!

Further reviews:
"This is a remarkable fic, beautifully written ... quite simply, dazzling." –Louder Yay (rated: ★★★★)

If the title sounds grammatically incorrect, please read this.