https://www.fimfiction.net/story/231394/a-nightmare-in-eidolon
 
Nightmare in Eidolon  
Written by FolkloreBrony
 
Nyx is haunted by a mysterious figure tied to her and Princess Luna, one that thrusts her into a world of wonder, imagination, and danger. Welcome to Eidolon, where everyone, and everything, deserves a second glance.
 
This story will update every Saturday at 10:30/11:30 AM Central Time.
 
This story was proof-read and edited by EverfreePony, Scaramouch and Salty Alty.
 
Test read by Blackyoshi and Lucondrix.
 
Nyx belongs to Pen Stroke, and FolkloreBrony takes no credit in the creation of her character.
 
Cover art drawn by Folklore17 and colored by 0ndshok.
 
This story is an unofficial but spiritual sequel to Past Sins and Scarred Hearts. Reading them is recommended, but not necessarily required.