A simple accident with magic results in a pony claiming to be an accountant appearing on Twilight Sparkle's door-step, and that is just the beginning of an epic tale of revenge, laughter, chaos, family, petty squabbles and on a few occasions, true love, spread across time, space, and entire universes.
Well, sort of.

First time writing. Constructive criticism welcome.

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This story is a sequel to The Twilight Enigma

With the queen of Twilight Town present, the Storm King's invasion of Canterlot goes badly for his commander and minions. Not satisfied with a mere victory, Captain Blackmane and her friends go on the hunt. Twilight is determined to find the Storm King and make sure he will never be able to harm anyone ever again. It's obviously a mission of reasonable prevention, not murderous revenge. Obviously... Right?

Book 4 of the Alicorn Adventure series.
Sequel to The Twilight Enigma and prequel to The Skyla Pseudonym.

Princess Luna is trying to find ways to remember the important ponies from her past, but is finding that it is difficult to maintain a perfect recall over the events of a long life.

Then Discord gives her something unexpected to think about.

This was written for the May 2020 Pairing Contest.

Ponykind has been peddled a lot of myths. Sometimes they were old mares tales, but sometimes it was because the truth was too awful to consider.

Twilight finds herself accidentally drawn in to the darkest secret in all Equestria.

Will she survive?

* Submitted into RockstarRaccoon's Nightmare Night in April horror write-off contest - go check it out! *

There is a small amount of mild gore in this story, and the gore tag has only been applied to ensure that those who may be offended have been warned.

This can be read as a stand-alone story or continued to its sequel Escape from Hell

Opaline had stolen the cutie marks from half of Equestria and was rapidly conquering the rest. Even the fake alicorn Sunny Starscout and her minions were faltering before her. One more push would bring Opaline to her final victory.

Then she surrendered.

And even Opaline doesn’t know why.

I'm fine with Celestia.

Celestia loves me.

Nothing is wrong.

Through some unknown means, Luna has been given the chance to stop her and her sister from making the biggest mistakes of their lives. Though it may cost her more than she realizes.

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Twilight's been having weird, unfamiliar urges ever since she became an alicorn. Like an intense desire to grow flowers, or the fact she can't stop chewing on her wings when she's distracted. As it turns out, you can't just suddenly inherit the magic of all three pony tribes without getting the instincts to match, and instincts can be a powerful thing. Doubly so when you're not used to them, and especially when they're telling you that your best friend with the gorgeous wings would make the perfect partner to share a nest with.

Wait, what was that last part?

Originally this was supposed to be a birthday gift for Celysus, but I fell in love with the idea so it's gonna be a full fic now. You can't stop me.

(Rated teen for mildly suggestive flirting)

This is a fic based on the Time Loop Files, the format of which was first codified by Innortal on fanfiction.net.
Here's a brief guide.
The basic idea is, one character (the Anchor, usually the main character of a fictional setting) is looping back to the very first moments of their parent series every time either they die or some kind of time limit expires. They of course end up monumentally stir crazy given enough time.
Eventually others start to loop as well.
The reset is not always perfect. Sometimes a loop's history will be different to the "prime" loop, or canonical plot.
"Crossover" or "Fusion" loops also occur, randomly. These can involve the home loopers having a guest, or the anchor for one universe spending time in another, or replacements of one character by another.
Vacation Loops are where the Anchor (or others) decide/s "buck it" and lets off steam by doing whatever comes to mind. There's little or no attempt to maintain the original timeline.

In addition, and particularly more recently, it should be known that this story has a collaborative element to it - people may submit loop ideas or loops, ideally at the Spacebattles thread (a link to the current version of which is on the Trope page), and they may become included.

There's two page image options, thanks to Filraen - the current page image has been edited by the original creator from this work of theirs.. The other one is here:
http://hourglass-vectors.deviantart.com/art/MLP-Loops-466030169