@emu34b  
Ok, and yes I saw Do Ponies Dream of Magic Sheep. But I felt the Nightmare Rarity arc of the comics did a beter job.

@David Dyster  
Also, Luna already dealt with her dark side this season. Did you not see S5E13?

@David Dyster  
You dont need to say the same thing twice.

@emu34b  
If we get a Nightmare Star episode the title of the episode should be called The Killing Nightmare.
 
The Killing Nightmare part1:A dark secret from Celestia’s past is about to come foward and make it’s present known.  
The Killing Nightmare part2:Nightmare Star the Hyide to the Celestia’s Jekel. Now the princess of the sun must face her reflection, but will she be abel to handle the other sis’s of her past.  
The Killing Nightmare part3:The Royal Sisters vs The Nightmare Sisters; how ever wins, things will never be the same.
 
Mostly inspired by Batman:The Killing Joke by Alan Moore and Brian Bolland, pleas Hasbro have a Celestia episode where she and her sister are in the spotlight.

If we get a Nightmare Star episode the title of the episode should be called The Killing Nightmare.
 
The Killing Nightmare part1:A dark secret from Celestia’s past is about to come foward and make it’s present known.  
The Killing Nightmare part2:Nightmare Star the Hyide to the Celestia’s Jekel. Now the princess of the sun must face her reflection, but will she be abel to handle the other sis’s of her past.  
The Killing Nightmare part3:The Royal Sisters vs The Nightmare Sisters; how ever wins, things will never be the same.
 
Mostly inspired by Batman:The Killing Joke by Alan Moore and Brian Bolland, pleas Hasbro have a Celestia episode where she and her sister are in the spotlight.

Where did I put my BFG 9000…

Someone done fucked up reeeeeeeeeeeeeeeeeeeeal bad.

@SkeeterTL
 
Considering those two, you’ll only die tired.

Hell hath no fury like a few goddesses pissed.
 
MUST RUN FASTER.
 
~STL

This could be an episode for the shows sixth season or the upcoming movie.