About a week ago...

A blue unicorn mare wearing a tattered purple cape was sitting at the banks of a river. A small pull-able stable was park a yard away. The moon was cradled amongst the stars in the heavens above, but its beauty was blocked by the dark cumulonimbus clouds that drenched the entire Everfree Forest. A large leaf above the mare kept rain from her pointed hat, yet drops continually fell from the side of her face.The rain pouring around her camouflaged her tears as they joined together in a dance down the river.

"Why does everypony laugh at me?" She quietly asked herself. She pulled at her cape and rubbed her eyes with it, tears still threatening to spill from them. "What did Trixie do wrong?" She suddenly remembered that a certain town was nearby. The same town that housed a single pony that ridiculed her, made her seem worthless, revealed her lies. The one pony called Twilight Sparkle.

Anger boiled in her mind at the thought of her enemy. She wanted to throw something, anything to be rid of this stress. Trixie simply wanted to humiliate Twilight and make her as miserable as she felt at the moment. Trixie wanted Twilight hurt, but she didn't know how. She just knew she wanted revenge.

What she didn't know was that she was being watched. Not by a pony, nor griffon, nor any creature native to the forest. A wisp of blue sped by unnoticed by Trixie. It could tell she was vulnerable, it could feel her hate for Twilight emanating from it. It could relate; both beings were subject to the purple unicorn's abilities. The gaseous entity watch as Trixie let out her stress by throwing her port-a-stable into the water out of rage. The wooden structure shattered as it quickly met the sediment-covered bottom of the shallow river. It was then that the Nightmare chose to invade the showmare's mind. The blue mare felt an intense burning sensation attack her entire being. She fell to the ground and began to convulse. It wasn't until a few agonizing minutes later that she blacked out from the pain. When she awoke, Trixie saw naught but fog around her. She got up and ran forward, hoping to meet a wall, but got entirely the opposite no matter which way she trotted.

"Am I dead? Where am I?" Trixie wondered, thinking out loud. She didn't expect anything to respond, and was quite shocked to hear a disembodied voice laugh at her from all around the space she stood in.

"Aw, is poor Trixie lost? Trixie whipped her head around to find the source of the voice and was even more shocked to see  a tall, dark alicorn walk towards her. It spoke with evil practically dripping from it words. "I care not for your well-being Trixie, only that you have enough potential to overpower not only the Elements of Harmony, but the even the Princesses themselves."

"Who are you?" Why do you think I have power when I was beaten by that Twilight pony?" Trixie inquired. Even though she wasn't certain of her surroundings, she was still certain of her hatred for that cursed purple unicorn.

"I am the Nightmare." The entity responded. Trixie stepped back out of fear. "Now now, dear, I'm not here to hurt you. Your pure hatred for a pony that holds an Element is a good enough reason to become my vessel. You have potential to conjure up any spell much greater than her and any unicorn can. What you need, however, to reach this level is a catalyst. That, my dear, would be me." The Nightmare flared out its wings for dramatic effect, and it was working, for  Trixie had been paying complete attention to him.

"Aren't you supposed to be a mare?" Trixie asked out of total innocence. The dark alicorn chuckled.

"My gender always depends on my vessel. As you may know your beloved Princess Luna, I had to become a Night-'Mare' Moon so as to adapt to her style and powers. Originally, I am a stallion of old origins. And I will not use you as I did Luna. You shall control everything you do, but shall have me to strengthen your magic and ultimately come to rule all of Equestria!"

The aspect of world domination sparkled in Trixie's eyes. She was greedy, and could not wait to get her revenge on those who humiliated her, especially Sparkle and the rest of the Elements. The blue showmare looked into the taller alicorn's eyes and asked, "Where do we begin?"

The Nightmare smiled and with a show of magic, summoned a large Ursa Major shrouded in an aura of dark magic. "This is now your to control. I doubt it would hold up against a straight on attack, but am completely sure it would cause total destruction and fear in the hearts of all ponies."

In av flash of light, Trixie was once again standing at the edge of the river. Beside her was a large, purple, armored star bear. "And now," The Nightmare's voice echoed in her head. "We shall start by taking the Elements of Harmony, and do away with any bothersome pony that dares stand in our way!" Trixie jumped on the Ursa's back and it began moving in the direction of Ponyville. In the back of Trixie's mind, where she could not hear him, The Nightmare plotted the demise of those 3 new ponies that interfere with his return to full power. Like he said before, he cared only for Trixie's power, not her well-being. Trixie won't even see it coming.

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