Dr. Whooves: Chapter 6: The Insignificance of Light
And when you awake be reborn not as luna, but as nightmare moon!" luna's eyes closed as the darkness washed over her. "was it really all that bad?" she thought to herself as she drifted off to sleep.
MLP-Sanrose- A new World
"how about when you were infused with nightmare moon? in your travels with her do you believe you might have seen anything like this creature?" luna bowed her head slightly, due to her sisters remark about her being the nightmare.
The Prince and the Gunslinger - Chapter 1
(after nightmare moon), you would see the otherwise fertile plains become hot and dry, the grass eventually wilting and giving away to a golden brown sand that stretches as far as the eye can see.
Changeling Heart: Wounded Left
Where chrysalis was green, her eyes were a deep blood red, cat silt much like nightmare moon.
Night's Children Chapter 3 Darkmoon
nightmare moon."
Death To Nightmare Chapter 6
I didn't get to see nightmare moon when she returned so you're the closest i'm going to get. also i wanted to meet you before judging you, that lesson was taught to me when dash here was at the academy." "i appreciate that.
A Mad Dash Through Time and Space - Chapter Five
In much the same fashion as the purple mare had done once before, with _certain death_ staring her in the face in the form of nightmare moon, twilight bravely stood her ground.
Antecedent
Next was nightmare moon, and the six young ponies who took up the elements of harmony to defeat her, and return her to normal.
MLP hoarding is magic by mugman
nightmare moon night party stuff, hearts and hoofs party stuff, christmas party stuff, used but still loads left stuff. he was amazed at how much the pink pony had done.
Going East
But yeah, he was heading east with nightmare moon! such a nice guy. i don't think there's ever been a human who cares about equestria as much as he does. you coud just feel it coming off of him..." "great!
STar Tiger, Moon Girl, Chapter 4
I am nightmare moon. and you are not alone in the universe, little human. there are those watching who may save you, if you but know how to ask. welcome me into your mind and i will show you how. "see? remember?
The Guardians of Equestria - Chapter 2 – Mornings, Messages, Meetings, and Meanings…
Purging the darkness from nightmare moon so your sister could be herself again showed me that we are nothing without our friends, as well as our family.