Twilight Sparkle never was a Unicorn and she didn't even know it.
What happens when her true heritage comes to light? Will she willingly embrace it? Or will she be forced to?

Beware of spoilers in the comments!

Edited by uTTerAbsurdity, Zervziel, Stormwatch and Gwenio

Cover art by the talented Cartoonlion and colored by the equally talented Stormwatch, original can be found here

Click here for the Tvtropes page

Twilight discovers the journal of King Sombra, and the unexpected secrets within.

A special thanks to my editor Stereo_Sub for such amazing editting.
Also a thanks to Gela-G-I-S-Gela for the coverart

"I have sworn upon the altar of God, eternal hostility against every form of tyranny over the mind of man."
-Thomas Jefferson

Three hundred years ago, Equestria tried to assimilate Earth.
They failed. They fled, rather than face justice.
We moved on. We conquered the stars, we made a civilization that spans across the infinite void. We built true harmony between species.
We thought we'd seen the last of Celestia, but as a desperate mobile colony on the fringes of known space came to discover, we were wrong.

It is time to finish what was started by our forefathers.

Based on TCB: Not Alone, by Starman Ghost.

EDIT: Following Starman Ghost's deleting of Not Alone, I've replaced the above link with one leading to a PDF file uploaded to mediafire.

EDIT (14/04/2014): The character of Evening Star was originally created by Starman Ghost. I am using her without his permission.

A prophecy leads the Imperium of Mankind to deploy a Deathwatch team deep inside the Warp. Soon they encounter Equestria and the "Six Blessings" it harbors. How will ponykind react to the fierce and grim protectors of humanity? The two sides will need to find common ground, and fast: a new threat has arrived in Equestria, and they will stop at nothing to see this fragile alliance destroyed...

A Warhammer 40,000 crossover. Special thanks to csimadmax for creating the cover.

The events of the Wonderbolt Academy have played out and Rainbow Dash is in the stretch to achieving her dream but still has a hard time getting a certain erstwhile friend out of her mind. After taking a few minutes to contemplate things, she decides that she's been given enough second chances in her life to see to it that somepony else gets one as well.

Rated Teen for some language later on, though nothing extremely vulgar.

Discord has been defeated, and Twilight and her friends are eager to get back into the swing of everyday life. Shortly after the end of the victory ceremony in Canterlot, Celestia asks a favour of Twilight, to put Discord back where he belongs, and the ever-faithful student accepts.

By noon of the next day, however, Twilight has both a startling revelation, and a terrible new secret to keep. Otherwise, the last thing she sees may in fact be the statue garden.

Acknowledgements
Edited and test-read by DreamVirusOmega (aka PoisonClaw) and Nonagon
Heavily inspired by and adapted from Garden Party: Petrified by PumpkinHipHop
Cover art used with permission by DocWario

Caramel wasn't always a Changeling, but he's going to become one. And he's going to do it for the sake of his very special somepony.

There are some things that time cannot heal, some wounds that life won't let us forget. These are the scars that are bare for the world to see, and they are reminders that no matter how happy we once were, we are no longer. But still Rainbow Dash takes the trips that festers the wounds and opens the scars, because no matter how awful she feels, forgetting would be worse.

Prior to Season 3
Story five in my Twidash Challenge: Rainbow Tragedy Theme
Image credits go to Jykinturah

Spiders. Oh, how I hate spiders. And yet Luna insists on keeping one as a...pet.

Just a little fun story to keep my skills sharp, so don't expect it to last very long!

After receiving an urgent letter from Princess Celestia concerning a grave danger to Equestria, Twilight Sparkle undergoes a crisis of faith. Can she perform a grim task for her beloved mentor, even if it means sacrificing all that she cares about?

Based on a story prompt by TraleRayne. Extra special thanks to Dream of Ponies and Noble Jury.