Twilight Sparkle broke time when she got her cutie mark. Now Twilight and Sparkle are sisters from another time. Twilight is hailed as the potentially greatest light magician of all time, and already has a reputation as a hero by the time she goes to Ponyville. This isn't her story, not primarily.

Sparkle is an orphan - her dark magic killed her parents. She lives with her brother in Canterlot's industrial sector because they can't afford anything better. She can't leave either. She's a natural dark mage; while Sparkle won't go mad like Sombra, her reputation is hardly any better. Worse, the law doesn't see her as a good pony.

The fact that the dead don't stay dead around her, or that Thorn - Spike's double - is an undead, soul-eating abomination, are other matters altogether.

(Also has some Slice-of-Life, but fimfiction tags won't let me put it with Adventure.)

Has an ask blog to go with it: Ask Sparkle and Thorn.
Also has a TvTropes page: Split Second Tropes.

Featured on EQD.

Cover art by Swirling Line.

A flip of a coin. A twist of fate.

Twilight Sparkle, younger sister of Princess Celestia's personal student, Shining Armor, grew up listening to her brother's bygone dreams of joining the elite of the elite: The Royal Guard.

Now, fresh out of the Academy, this young mare is ready to prove herself equal to the deeds of the great soldiers she read about as a filly. Too bad the princess she ends up protecting isn't Celestia.

This story is a sequel to When the Man Comes Around

Day grows cold and dusk draws near,
The winding path no more shall bend.
Sunlight takes its its final rest,
As every journey meets its end.

This is the final story in The Journey of Graves.

Side Story to The Demesne of the Reluctant Twilight Sparkle

When Doctor Princess Twilight Sparkle got Ponyville and the surrounding lands as her exclusive demesne, she knew it meant changes and stuff. Glittering opportunities. Dire crises. Friendships gained and imperiled. The dawn of a new age for Ponyville. A renaissance of the arts and sciences. A great test of her abilities as a leader and as a friend.

The brewing civil war took her by surprise, on the other claw.

The Princesses and their allies in Canterlot are working to change the laws, disband the new militias and ensure a lasting peace, but they need time. Soon, this cold war of arms and intimidation will heat up, and all the laws and decrees in the world ain't stopping it.

Doctor Princess Twilight Sparkle will buy them time. She will do what it takes to keep her friends, her family, and yes, her demesne safe.

With the help of a handsome griffon security professional—that's me, by the way—a devious illusionist, a ruthless athlete, a bored noble, and a pair of boater-clad con-ponies, she'll stop the damn war herself if she has to.

Touch wood I'll live to tell about it...

This story is a sequel to Aegis of the Hive

Natural selection. It is the byword of every changeling queen who has ever lived. The chief resource that has always curbed the hives' growth used to be love. Now though, with Queen Twilight Sparkle's bloodline capable of producing love on their own, the old guard of changeling morality has seen fit to acquire this ability for the next generation before removing all of their future royal daughters' competitors.

Some queens are far closer to this goal than others.

Editor in Chief: A Bitter Pill, and Boldish42

Twilight's had some time to think about what happened during the Tirek crisis, and now she has only one question on her mind:

Did Twilight get Celestia's immortality or not?

When she confronts her former mentor about it, she learns some interesting things about definitions, technicalities, and necromancy.

More importantly, she learns that even the greatest of ponies have their weaknesses.

A/N: Mostly TwiLestia friendshipping, and lots of headcanon. Also one or two cameos.

Twilight Sparkle brings her Granny Sparkle in for Family Appreciation Day at Celestia’s school to talk about the origins of the noble houses of Sparkle and Armor.

There is a reason why Twilight used the phrase ‘works every time’ to describe the want it, need it spell. Her data says it has an approximately 99% success rate, but it used to be 100%.

Previous Episode: Twin Twilights
Current Episode: Season Zero — Episode Three
Next Episode: Episode Four: Twilight Frankenstein

This, this is why I spend so much time in the archives, Twilight thought, holding a dusty old book close in her magic. Inside the book were a number of advanced spells, each one more interesting than the last in some sort of circular logic that Twilight could only assume went to infinity

Twilight galloped through the doors to her tower and leaped onto her favorite reading pillow on the balcony. She opened the book to the table of contents.

Oh my gosh! They’re all so interesting! Ooh, an age spell! That…might be a bit beyond me. But here right below it – a duplication spell!

Previous Episode: The Brief Reign of Princess Twily
Current Episode: Season Zero – Episode Two
Next Episode: Works Every Time

Non-canon prequel to The Enchanted Library

As a filly, Rarity's favorite bedtime story was about three princesses trapped throughout Equestria by a wicked spirit of chaos. How she dreamed of finding them all when she was older, especially the princess trapped in a library under a tree. She knew, however, that fairy tales weren't real.

Only when she grew up would she find out how very wrong she was.

Based on an AU a friend came up with in which Rarity stumbles across an enchanted library where Twilight is its spiritual guardian, and both form an unlikely friendship as she helps Twilight be restored to normal.