A changeling gets a very risky and clever idea.
Pretending to be an advanced magic doll left as an anonymous gift in front of Twilight Sparkle's home.
It's so audaciously stupid there is no way it's not going to work.

While visiting his sister Twilight at her home in Ponyville, Shining Armor is accidentally transformed into a little, blank flanked filly. In order to hide her mistake while she tries to find a solution, Shining Armor must live as Twilight's little cousin Gleaming Shield. Things get worse when the Cutie Mark Crusaders meet the new filly and decide she needs to join their group in their adventures around town.

Thanks to DDRMASTERM for taking the time to edit the story

Twilight, after becoming an alicorn, finds her plain unicorn magic has been increased drastically. Yet, she wonders about the other kinds of pony magic? She should have the natural talents of all three clans in equal measure. So, to test this hypothesis and to see how much she's changed, Twilight begins an experiment. She enlists the aid of Applejack and Rainbow Dash to provide the tests, and pulls in an unsuspecting Lyra to be the control group.

Let the experiment begin.

Written in a google-doc live stream based on an idea from Rinnaul and contributed to by those viewing the stream.

After finishing her portion of the day's harvest in record time, Applejack heads home early to check on how Apple Bloom's doing alone in their house. What she discovers once she gets there shocks her right to her core, and what happens afterwards changes the way she sees her little sister forever.

First runner-up in Obselescence's The Most Dangerous Game contest, using the prompt "An OC and a major canon character (in this case, Apple Bloom) fall in love with each other."

Things haven't been going well for little Snow Bolt. She's always in trouble at school, her father is always yelling at her, and the bullies at school pick on her relentlessly. But just when she thought things couldn't get any worse, she's kidnapped by a dragon, who plans to bake her into a pie. Can Snow Bolt escape from the monster's lair before it's too late?

Featured on Equestria Daily!
Audio Book reading by the immutable Illya Leonov!
Cover art generously provided by NovelIdea!

After reading about Daring Do's failed attempt to secure an ancient artifact, Twilight and Rainbow Dash take it upon themselves to find it in her place. Unfortunately, not only do they find it, but by reading a passage from the book, Rainbow Dash accidentally unleashes a curse which causes everyone in Ponyville to speak in puns. This, of course, drives Twilight up the wall, especially since she's the only one who seems to notice.

Pincer is a changeling, a proud soldier of Queen Chrysalis. After the failed invasion of Canterlot, he finds himself trapped and at the mercy of Princess Celestia's Royal Guard. Believing that Celestia sees his species as nothing but soulless monsters, he prepares himself for the worst. The weeks crawl by, marked by an endless series of questions he will not answer for fear of endangering his friends and family at The Hive. As his nerves wear down and his interrogators learn just how ruthless he thinks they are, they have nothing to report but his belief that they will kill and destroy his kind without mercy.

Celestia steps in to prove him wrong, and what Pincer learns leaves him questioning everything he has ever known — but also gives him hope for what he'd never thought possible.

Cover art commissioned from http://www.demonkings.com.

Now with a TVTropes page.

(This is an old story I wrote three years ago during season 1)

Twilight Sparkle's birthday has come around, and Rainbow Dash is unimpressed with Rarity's present. When Applejack pokes a bit of fun with her friend, Rarity becomes unusually upset. Twilight Sparkle investigates her friend's feeling, learning something she never expected about her friend and why she is truly suited to be the element of Generosity.

Spanish translation: https://www.deviantart.com/spaniard-kiwi/art/Simply-Rarity-Spanish-translation-846034960

WonderZone ("it's where foals gotta go!") is only the most awesome arcade in the world. Just ask Rainbow Dash, age 6. Its the sort of place you long to be growing up.

Some fillies would be content with ten minutes, fifteen, twenty. But all that Rainbow Dash wants - and all that she's getting - is another hour in the ball pit.

This story is a sequel to Steel Solstice

Continued in: My Little Apprentice: Apogee

Twilight Sparkle learns that the trust and goodwill of the Princess isn't always a good thing as she's given the trust of an important assignment. When that assignment turns out to be long-term, how will she handle taking care of a filly of her own? How will she handle this strange new filly, who proves to be much more than she appears. As a matter of fact, she seems to be from an entirely separate universe.

Meanwhile, Second Chance has kept only enough of her memories to know that she isn't what she should be. The wonderful world of Equestria has its own dangers, and she seems to have a knack for attracting trouble. The more of her memories return, the more she wishes she could just forget. But you can't forget when all of Equestria depends on you remembering.

Only one thing's for sure: The longer Twilight keeps this strange filly in her care, the stranger her own life will become, and things she thought she knew about Equestria will unravel before her eyes. Strange ancient devices, an eccentric mint unicorn and her so-called "Equestrian Precursor Society" are only the beginning for Twilight Sparkle as she begins a journey of her own. She too may wish she could simply forget. Unfortunately, it's too late for either of them.