In a world full of magic, mere words can pose a deadly threat. When simply reading a sign can instantly infect the unwary, and cases start to turn up all around Ponyville, Twilight Sparkle casts the only spell she can find that can give her the time she needs to find the cause of the plague. But then she has to figure out how to stop the epidemic... without being able to read.

Editing provided by Spabble
If you like this, try Rainbow Typhoon
Audiobook on YouTube and for download on SoundCloud
Spanish version translated by MIkimoco
Russian version

[Complete] Celestia awakens to see an empty world, white sandstone stretching the horizon. She wanders the world as she builds it from her imagination, filling it with life, but as time passes, the world that she created begins to seem like little more than a lucid dream, conjured from the dust.

How would things be different if Twilight had never made it to Ponyville? Twilight Sparkle finds out just how different things could be when she is forced to travel to her own past while chasing down a mystery; a plot to erase Princess Twilight Sparkle from history.

Landing in a time just weeks after the one thousandth Summer Sun Celebration, she finds a world shrouded in an eternal night, where the Elements of Harmony were never recovered. Can she fix the things that should have, but didn't happen? Or is this Equestria destined to head down a different path?

Chinese Translation by Hell Organist

Strange nightmares are plaguing the ponies of Equestria.

Somepony must help ponies to face their deepest fears, but unless Princess Luna is able to discover who—or what—is responsible, the nightmares may never end.

Scootaloo is ready to prove that she can be as fearless as her big sister, Rainbow Dash, even if it means never having a peaceful night's sleep again.

The Canterlot Caverns are a strange and enigmatic place, untouched and forgotten by pony-kind for centuries. So when a strange metal object is unearthed in their depths, it's up to Twilight Sparkle and Lyra Heartstrings to discover the many secrets it holds.

Together, the two of them will have to do their best to understand the remnants of an ancient civilization, and decipher what remains of Those Who Came Before.

The cover-image is a cleverly edited stock image, which was modified by the stupendous Corvo.
Proofreading was performed by the equally fantastical writers:
Timetraveling Pony (Who started as a proofreader when Cloud was writing this. Hats off to him for being dedicated and staying on as a proofreader for me.)
DustyPwny
Tidal
Superluminous
Night Spark
PhiliChez

And a special Thank You goes to The Sentient Cloud for allowing me the honor of continuing this great story after he retired from writing fimfictions.

As it turns out, this story is eerily similar to Lyra Heartstrings and the Hand of Man. Due to their similarity, I feel that it would be appropriate to give said story a mention.