At that moment, time seemed to crawl to a stand still.
Nova, with his arm stuck out, Celestia, standing above with a grim look adoring her face, and the Elements of Harmony, stood there in utter shock at what they had just witnessed.

A signal scream broke out, not from Fluttershy, who was hiding behind her friends, not from Rarity, or in fact, any of the ponies.
It was Nova, holding his right arm, screaming neither in shock or horror, but in true, raw pain.

His screams sounded like that of a wounded animal, he clutched his now bright, golden arm, a pain shot all the way through it.
There was nothing he could have done to brace himself for what felt like his arm slowly melting away, he quickly fell the grass, now covered in what remained of the pony guard from before hand, and ever so slowly, he watched his actual arm start to disappear, now he cried out in both pain and fear.

"W-what's going on with me!?" he cried out, fear and pain completely overwhelming his mind.

Celestia watched in quiet horror from above, the six mares around her all either followed suit, or were covering their eyes.

She heard it, maybe the others didn't, but she heard that pain in 'his' voice, since it sounded distinctly male, and watched him collapse to the ground, whatever it was, it seemed confused and in a great deal of pain.

Celestia acted quickly, flying down a moderate distant to the creature, she stopped about ten metres from him, she could hear her little ponies crying out from above her, telling her not to go near, but she couldn't afford to waste time.

Nova had watched it, his arm slowly disappearing, leaving only this strange golden, glowing shell around what used to be his actual arm, although the pain was still there, it had greatly reduced from what it was earlier, and when it was done, all he could see was some see through shell of what used to be his arm.

"No." he thought. "I can still feel it, like its there, but it doesn't have any actual weight."

He heard it then, the sounds of something hitting the ground nearby, after having been attacked once already, having killed someone for the first time and suffering through that unbearable pain, he reacted the only way his mind knew how to, he lashed out, attempting to strike at the new threat, before it could have a chance to hurt him.

Celestia barely had time to react, she quickly jumped back, the now glowing appendage almost brushing against her face, she could feel the raw power pouring forth from the appendage as it neared.
The arm swung past her, a clean miss, but all that power needed to go somewhere, so it left at the end of the swing.

The effects were not immediate, as if the world itself needed a second to understand what had just happened.
After a few moments of silence, the side of the mountain, in which Canterlot had stood upon for a time almost unrecorded, seemed to slightly give way, before it shook violently, a bright light exploding forth from it.

Most of Canterlot mountain simply disappeared with the light.

Celestia was simply blown back by the force of it, and not just her, everything was, the castle, every stallion, mare and child felt its divine force, as if a god had come down and struck the mountain itself, which may not be to far from the truth as it seems.

Twilight Sparkle, the student of princess Celestia, and Element of Magic itself, as at her wits end.

So much had happened it such a short period of time, Discord, the very spirit of chaos itself had broken free and put her through deep mental trials, only for her to bounce back, with the help of her friends of course, and defeated the ancient foe of ponykind.

Now, along with her friends, stood there in absolute shell shock.

Canterlot had been forcefully dislodged from the mountain, by some miracle, it had slid down the now devastated slope and landed rather harshly into the area bellow, thankfully, a large lake had formed at the bottom of Canterlot mountain due to its waterfalls.
It seems the city was even prepared for such an unlikely event as well, for it seemed to slightly float on the water, though that didn't stop most of Canterlot from suddenly flooding.

The cause of all this damage?

A strange creature that had apparently appear out of Discords maze, it had two arms, two legs, a head, and a upper torso, she knew this because while her friends may have been gawking at the grizzly sight they were exposed to, Twilight did what she usually did, observed and studied.

However, this seemed to matter very little at the moment, the town was in panic, and her friends (including her) were unsure on how to act, it was then that not only Princess Celestia appeared, but Luna as well.

Luna looked at the six mares, they were barely moving, obviously shocked at what they had just witnessed, or maybe they didn't actually understand what they saw, and were still in the process of trying to figure it out in their minds, it didn't really matter though.

She looked to her sister, her usually calming aura had been shattered, and was replaced with one of anger and slight fear, she didn't look that well either, she had a slight limp and a cut snout, probably due to being to close to source of the attack.

That's right, that strange creature that had appeared, her sister said she would deal with it, but obviously it didn't turn out that was, after the event had finished, Luna instantly sought out her sister, only to arrive at the scene they were at now, and now, only one question rang through her, and most likely her sister, mind.

"What power does this creature possess?"

Nova was shaking for a number of reasons, one, his arm had been replaced but a fake glowing version, two, the was still reeling from the pain, and three, he had just destroyed most of a mountain in one, simple sweep of his fist.

"What... am I?" He reluctantly brought his gaze back to his arm. "Am I even human any more?" He asked to no one, he was plagued by these types of questions, all which had no answers in sight.

After a while, he looked around, he seemed to have dragged himself out of a large pool of water, which now had the extra feature of an entire town.

"That's right." He said to no one, for there was none nearby. "I did that."

He looked up at his handy work, basically one side of the mountain didn't exist any more, there was no rubble falling, whatever got caught up in that white light simply didn't have the right to exist any more, so it didn't.

He looked back at his glowing arm, it had died down in intensity at least, but its ever golden glow was still clearly present.
Nova stood up, and screamed as loud as he could.

"What the ever living fuck is going on anymore?!"

He took a moment to center himself, a good trait of his, but it wouldn't last long, he thought on what he had done and how he should proceed.

"I-I killed those guards, what the hell is wrong with me? B-but it was all in self defense, yeah, of course it was." He stole a glace at the newly relocated city. "Who knows how many I've hurt, I need to make myself scarce, they'll be looking for me, either for answers or revenge."

With that conclusion in mind he looked around, in the far distance there was what appeared to be a small town, although tempting, he knew he couldn't, his appearance was to foreign compared to these ponies, so he then turned his gaze to the massive forest near said town.

"Perfect." he thought, and quickly made the rather long track towards the dark forest ahead.

Author's Note

If anyone sees the Pun I made I'll give you 8/8 m8