Tough Cookie is a plump and sassy artifact appraiser who runs an antique shop in Canterlot. Syntax is a sophisticated bookseller and polyglot who runs a bookstore, also in Canterlot. Though different in disposition, these two friends share a common interest: seeking out rare, historical treasures. This story details one such adventure of theirs.
(This takes place between Seasons 8 and 9)
Artwork by: Mellowhen

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

The now reformed King Sombra and Radiant Hope make their way home to the Crystal Empire upon recovering Princess Amore's shattered remains in hopes of restoring her. However, they quickly find that the memories of not just the citizens of the Empire, but the citizens of Equestria as a whole, have been twisted, believing now that Sombra is still evil. Sombra and Hope must now restore the good king's name in order to restore their shattered princess...

This story takes place in the canon of the comics, but to keep faithful to the tradition of the comics to follow show canon, it will also acknowledge the canon of the show.

Art is a cropped edit of an image by TwitchyGears. https://www.deviantart.com/twitchygears/art/A-ponies-redemption-551142518

This story is a sequel to The Cat in the Counselor's Office

After being resurrected by Grogar; The Father of Monsters, King Sombra went to work on his plan to take over Equestria. Starting with the Crystal Empire, he made sure that everything was going according to plan and take everything into account. Nothing was going to stop him this time. Not even the talking cat that's on a floating book and playing with Cadance's daughter...

... Hold on, what?

Well, here we are. You guys wanted to see more Yuumi, so I'm trying to deliver on that. Plus, with the tenth anniversary of League of Legends in full swing, I think it was the perfect kind of motivation for me to see this through.

This story takes place during season 9's 'The Beginning of the End' and serves as an alternate outcome to what happened in the show. I am trying my best in order to set itself apart because... well, when you throw a magical talking cat into the mix with anything, crazy things happen.

Credits to everything shown
Cover art was an image I found on Google, but don't quite know the artist that did it. Still, credits go to them anyways
Big thanks to Viper Pit for helping me look over what I was writing and providing ideas.
Hit the Popular stories tab on 11/02/2019. Nicely done

The elders say there's nothing above the stone but endless water, stretching forever into the darkness.
But there are older stories, hidden in the soil and the dirt. Stories of a place with no ceiling at all, where light falls from on high in every color one can imagine.
And a dog by the name of Dash is going to find it.

The six Pillars of Equestria have finally returned from a thousand year imprisonment in limbo. So, naturally, the first thing you would do as a legendary hero from a thousand years ago would be to see what's become of the realm.

Knowing that everything might come as a bit of a shock to them, Twilight and her friends each partner up with their respective Pillars, in the hopes that they may ease them back into Equestria and its customs...

This story is a sequel to The Village Called Respite

That little filly from Cloudsdale has blossomed into a true mare of Respite with the help of those not-quite altruistic twins. Joined by their bubbly friend, Toola Roola, they're ready to take their first steps into adulthood. But outside the village gates, the world is changing fast.

Can Sure Stroke and her friends keep up? Or will their happy life in that village hidden in the untamed Neighagara Forest take a turn as the world comes knocking at their door?

Cover art by Arcticwaters.

Even now, weeks later, Twilight was still unable to properly explain what possessed her into taking that first bite.

She double, triple, and quadruple checked the spell, and it went off perfectly. Well, as perfectly as a full-body transformation into a dragon could go.

She just didn't expect gemstones to be so tasty...

Featured on 7/28/2018! Thanks a bunch everypony!!!!

Now with an audio reading by the talented Skijarama (AKA Tone Shift). Thanks a bunch!

Spike and the rest of the Student Six visit Mt. Aris, where Silverstream can't wait to show off her culture. Her brother, Terramar, offers to take them out for a swim, but he hasn't had much experience transforming dragons. Hijinks ensue.

Cover image by https://derpibooru.org/profiles/Foal

How is Twilight supposed to figure out what the cutie map means when it chooses a cutie mark that a bunch of ponies have, and none of said ponies bother showing up? Somepony's going to pay for this transgression against common decency.