Twilight Sparkle has too much magic, and it will take her decades to learn to control it. Her spectacular loss of control during her entrance exam only proves that fact. She is a danger to herself and others.

After Sunset Shimmer’s disappearance, Princess Celestia needs a new student to bear The Element of Magic to defeat Nightmare Moon. With all of Equestria at stake, Twilight Sparkle…is not the pony she needs.

Princess Celestia seals Twilight Sparkle’s magic with the distant promise of one day teaching her.

But there are two diarchs of Equestria. Amidst a lucid dream, an offer is made.

“Hello, Twilight. Would you like to be my student?”

Cover art provided by Lafiir.

Ponies get punched, repeatedly. In the face.

This story is a sequel to Princess Twilight's Profoundly Peripheral Protector

Big threats were nothing new to Storm Kicker. Even before entering the service of Princess Twilight Sparkle, Storm's career had brought her head-to-head with some of the worst Equestria could offer, and more still—from water monsters in Canterlot to the changeling invasion. She knew when she agreed to be Princess Twilight Sparkle's bodyguard that it was probably only a matter of time before some new ancient evil broke loose, and she would need to be there, at her princess' side.

When Tirek began his assault on Equestria, Storm was ready to give her life in the service of princess. What she wasn't prepared for was Twilight sending her away. However, regardless of her princess' orders, Storm swore an oath to serve and protect her princess, and she will do what she must to fulfil it. Even if it means putting her life on the line in a hopeless battle against an enemy she cannot possibly defeat.

Twilight Sparkle's tenure in Ponyville has been anything but calm. Since the Summer Sun celebration, she's dealt with a variety of foes, from Nightmare Moon to dragons, hydras, Discord, and King Sombra. But when Pinkie Pie asks for help with a small problem, Twilight finds herself pulling out all the stops to deal with the most dastardly (and curious) fiend yet encountered: Sugarcube Corner’s haunted mailbox. Rainbow Dash’s letter from the Wonderbolt Academy is on the line. Failure is not an option.

Twilight isn't having a very good day. An experimental spell blew up in her face, an army of changelings is attacking Canterlot, and she just died. Yet somehow, it looks like it's going to keep going downhill from here.

Given the chance to correct what's gone wrong, Twilight swears she's going to fix all this even if it kills her. Which it will. Frequently.

Cover art by Pixel Prism
Spanish Translation
Series TV Tropes page

This story is a sequel to The God Empress of Ponykind

One thousand years ago, Luna, Warmistress of Equestria and sister of Empress Celestia, fell to the powers of Chaos and plunged Equestria into a brutal civil war. The Traitors were defeated, but not before Luna made the ultimate sacrifice and was sealed away in the Immaterium with only the soul of a slain Primarch to keep her company. For a millennium she has been locked away, waiting for a chance to return to her home and her sister.

Now, she has been freed from the Immaterium, and as she takes her first steps in a new Equestria, one ruled by the powers of Harmony, only one question remains:

Does Equestria still need the services of a Warmistress?

Comments may contain spoilers. YOU HAVE BEEN WARNED!

Also Tropes. Please contribute.

Princess Celestia: Goddess of the Sun, ruler of Equestria, beloved Princess of ponies. She is loved by all, and loves all in return. A calm and wise ruler, she sits on the throne in Canterlot, maintaining peace and harmony throughout the land.

What most don't know is that her past is much darker: She was once a commander of legions, a warrior and scientist of unmatched skill. Thousands of monsters and abominations fell to her forces, slain in the name of an old leader, one entombed within his own throne. Free of her old form, free of the powers of Chaos, she was cast into a new realm, in a new form, with a new lease on life.

She is the God Emperor, Eternal Ruler of Equestria and Lord of the Imperium of Man.

Has a TvTropes Page. Please contribute.

Comments contain spoilers. YOU HAVE BEEN WARNED!!!

This story is a sequel to Stardust

Times are changing for Equestria as Twilight’s return brings with it news of people and cultures from beyond the peaceful world everypony knows. Aid and volunteers are freely offered to help the besieged humans of Earth because every Equestrian knows that’s what good friends do. Unfortunately, making friends can also have the unintended consequence of making enemies.

When the monsters besieging the humans strike at Equestria with a level of brutality not seen in over a thousand years, the cry for help is sent to all the kingdoms of the world. Honored allies step forth to fulfill ancient treaties and oaths. Enemies, old and new, bury their grievances. An alliance never before seen in Equestria will be created to combat the monsters from the void.

And because of these events, a grim but welcome sibling to the XCOM project is born.

(XCOM/FiM Crossover)
(Sequel to Stardust, which I recommend reading before starting this. Fortitude Amicitia and Broken aren't required reading but are supplemental to the storyline)
(Gore tag for blood and violence)
(Alternate Universe tag because of the divergence from canon that Stardust has caused)
(Uses elements of Season 4)
(Coverart produced by the amazing Carnelian!)
(Many thanks to Arzoo, BradTheBrony, Vandenbz and Setokaiva for prereading!)
(As of 03/07/2016, the prereading team consists of Arzoo, BradTheBrony, Noble Cause and Metallusionsismagic!)
(Complete with it's own TVTropes page as part of the Stardust continuity. Could use some updating!)
(Character tags will be added as chapters are added!)
(Featured 5/12/2014! Thanks folks!)
(Possible spoilers in the comments! BEWARE!)

An MLP/Warhammer 40K Crossover

The Iron Warriors 38th Company has landed in Equestria, entrenching themselves like a barbed hook. They hunt the aliens of the Tau Empire, intent on destruction and pillage.
A small squad is dispatched on a reconnaissance mission, only to find that there is intelligent life on this world besides the feuding space-farers.
Will these improbably adorable and friendly equine aliens turn the damned warriors of Chaos from their blood-soaked path, cleansing them of their dark legacy with the magic of friendship and harmony?

No.
No, that isn't happening.
EXPLOSIONS!!

(Dark humor warning; limited grimdark themes)
(Cover art by Nicholas Kay)
(This series now has its own TVtropes page!)
(This story is a contestant in the Tournament of Canterlot, a charity event to raise money for Syrian refugees! Go here for details and donations!)
(Featured on Equestria Daily 8/20/15 )

The creak of metal echoed as a hellish choir in the room. Lyra sobbed, clutching the little communication device to her barrel, as though it were her life itself. "Please..." She whispered. "Anypony, I think-I think it's getting closer." ...A sickly, raspy breathing crested the doorway on the other side of her hiding spot. "Help..."

[img]http://i1242.photobucket.com/albums/gg531/heavensbee/Smilies/divider_medium_zps621145b7.jpg[/img]

There is an organization which protects mankind, but remains shrouded entirely in secrecy. It is known as 'The Foundation'. They are unscrupulous and methodical, sacrificing as many lives as need be for the greater good. It can't be helped, the supernatural and meta-physical will always be a threat to humanity.

But not all of their specimen and objects are dangerous. They are varied, some help, some kill. Some are delicious. Some, are deadly.

And some are...well... Cute

[img]http://i1242.photobucket.com/albums/gg531/heavensbee/Smilies/divider_medium_zps621145b7.jpg[/img]
Hello everypoooony! I'd like to thank all the awesome bros that helped with this collab, MrPockets as a writer and editor! MerlosTheMad as a writer! And finally Flying Wingnut as our last collaborator and chief editor. Hope you enjoy the beginning of our haunting tale... *ENGAGE SINISTER LAUGHTER*