This story is a sequel to Feedback

A terrible loss has been averted, but even that has a price.

Between the disappearance of several hundred ponies from around the world, strange portals leading to alternate versions of Equestria, an unknown alicorn frequenting Ponyville for secretive reasons, and the arrival of a new race of ponies bringing some ulterior motives, the pieces sowed by Twilight’s fight with the Nameless are set to crash back down.

What happens when friendship fails? Who will take Twilight’s place within the grave?

The Crystal Ball Trilogy is a series of stories which deal with time travel, parallel universes, and other manipulations of time and space. Substitute is the middle story; it is preceded by Feedback and is succeeded by Divergence.

Digital pdf version here
Print book version here

Featured on 7/19/2016!
Goodreads entry~

Ask Me Anything 10/22/16
Ask Me Anything 1/18/17

Edited (with varying degress of contribution) by
sourichan, Kuairu, Thought Prism, Orion Caelum, Corejo, and AlicornPriest

Equestria has seen their fair share of dangers and threats made to their land by gigantic monsters and power-crazy lunatics. From all of these threats, the Elements of Harmony have been at the ready to combat them through the unbreakable bonds of the magic of friendship.

However, a new enemy bearing incredibly lethal weapons threatens to leave the Elements helpless against unprecedented violence. When one Element and two others are taken hostage, a group of elite soldiers contact Princess Celestia to offer assistance. They're professional and more than capable, but Celestia fears they may have ulterior motives. Not to mention, there's the fact that they come from another world.

Proofread and edited by: totallynotabrony

Rainbow Six belongs to Tom Clancy, Rainbow Six: Siege belongs to Ubisoft/Tom Clancy, My Little Pony: Friendship is Magic belongs to Hasbro.

Department Memo:

Starting on Monday the 26th, our office company will be offering an optional "Pony Break" available daily to all employees for stress-related purposes. If interested, please leave your availability with new company employee Fluttershy at your earliest convenience.

Twenty-two to forty-four minute meetings available upon request.

Luna does her best to catch up on the events of the past thousand years and ends up reading even more than Twilight.

One day, an ancient tome slips into her pile of reading material and she reads it eagerly. What she finds there may very well be the discovery of the millennium: The location of the last refuge of the humans.

With the help of Twilight and her friends, the Lunar Princess sets out on an archaeological expedition to find the very last human on the planet of Equus.

And they found one, but why is he forged in a full body armor and claims to not being a human... Well he's not one anymore.

The immortal, artificial intelligence known as CelestAI tries to convince a dying human to upload into Equestria, even though he hates her.

Based off Friendship is Optimal.

Trope Page

AK Yearling is an award winning author that moonlights as an artifact seeking adventurer and regularly stops a rogues gallery of villains...or is it the other way around?

When an autograph signing accidentally activates one of those artifacts, AK Yearling comes face to face with her greatest challenge: her own creation, Daring Do.

What happens when the real pony meets her ideal self?

A commission from Alexwarlorn. This was really fun to write! Chapter 2 is commissioned and incoming!

Thanks to IFlySNA94 for the preview pic!

My Little Pony Belongs to Hasbro!

Avengers: Age of Ultron crossover.

Ultron’s plan had come to perfect fruition. There would be no more war, no more chaos, because the ones who caused it all would be gone. In just a short moment, the world would be saved from its true demon. Humans.

It would have all been so much simpler…if it wasn’t for them.

The Avengers.

As it is said, as it always will be, true peace can only be granted through countless innocent lives. In hindsight, the ponies were never that different from humans. Ultron’s plan is not yet over, and soon his strings will be severed…for the last time.

Big shoutout to Shrekzilla for his amazing job on the artwork!
Sequel: This War of Ours

While hanging out with her friends, Sunset Shimmer learns that earth horses apparently can't vomit.

As a magical talking pony, this discovery utterly baffles her.

Proofread by the ever helpful RQK

This story is a sequel to Nightmare Moon's Tiny Adversary

Twilight Sparkle is a one-kilogram pony, shrunken by Princess Celestia following her entrance exam to the Celestia’s School for Gifted Unicorns to ensure that her power surges would not pose a danger to the ponies around her.

She’s spent thirteen years full of hard training at her new size, facing the life-threatening experiences that came with living in a world of giants. To survive those thirteen years of hardship and joy, of learning and adventure, and of pride and humility, Twilight has challenged herself to become stronger, to overcome any obstacle.

After defeating Nightmare Moon with the help of her friends and the princesses, Twilight is ready to start a new chapter of her life in Ponyville. What kind of secrets and surprises await the little but powerful unicorn? Will this eventful town survive such an unpredictable citizen?

List of editors:
Top editors:
Nagel+Navari
Kydois
Georg
Plainoasis

Zecora lines editor:
Discord_Lexia

Luna lines editor: (helped a lot with old Equestiran)
bahatumay
Rated+Ponystar

Pre-reader (pointing out issues and giving suggestions how to improve the story):
Skydrake
Rated+Ponystar

Seconary editors:
lucia+merinero
Solstice+Shimmer
HeartLinda
tana1100
Pump+It+Up - some of Pinkie Pie's setences

If I forgot to add someone due to a long time that has passed, please PM me.

In the shadows of a forgotten realm, one mare trudges onward with music, and a cute little house cat, as her sole companions. Lyra Heartstrings has fought against a dark curse for more than a year, and it's now beginning to take a toll on her mind. Will she be able to keep everything together in light of her choice? Or will the spanning abyss inevitably claim her as one of its own?