This story is a sequel to Avatar: The Last Alicorn. Book 1: Pegasus

The story is done, the battle lost. With Discord free to run rampant, will Twilight and the others be able to stop him? What cruel and twisted plots does he have in mind for them and, more importantly, what does he have in store for the elements themselves? The final book in the Avatar series starts now!
Special thanks to Angel_Bunny for editing the chapters for me
Please enjoy!

Full collection:
Avatar the Last Alicorn:
Book 1.
Book 2.
Book 3.
Book 4.

Legend of Diamond Tiara:
Book 1.
Book 2.
Book 3.
Book 4.

Disclaimer: "Avatar: the Last Airbender" and all associated characters, storylines, and materials belong to Nickelodeon and were created by Bryan Konietzko and Michael Dante DiMartino.
Artwork is by me editing the error message from Fimfiction.

This story takes place before Of Lilies and Chestnuts

The parentless ponies of the Canterlot Orphanarium are in for a great treat—the Wonderbolts are coming for a visit! The aerial aces are eager to join the fun, but Spitfire has different plans. When she reluctantly agrees to spend some time with the kids, she gets more than she bargained for from a gang of two-and-a-half most notorious orphans who will put her patience and leadership skills to a test like no recruits ever before.

Spitfire, meet Chestnut, Glavia and Wind Whisper. Try to get along, will you?

A fellow pony notices that Princess Luna may have a serious problem: there is a small, sentient race inside her mane and they have been living there for quite some time. Luna must decide what to do about this.

A random short story I made to help bring the smiles.

--You will most likely enjoy this story if you also like:--
Luna freaking out
Celestia being totally chill
Sea ponies!
Explosions taking place inside people's hair
Entire wars taking place inside people's hair
Absurd and Absolutely Delicious Comedy
If you liked Mic the Microphone's Audio Version of this story:
https://www.youtube.com/watch?v=WIY268lNxeU

Fancy Pants and his lovely wife Fleur are quite possibly Canterlot's most heroic duet. Together they conquered countless events, faced hordes of snobbish socialites, and emerged victorious from the most dire of faux pas. May their bravery and finesse be forever remembered on parties to come!

There is a missing element in their perfect life, though: the joy of having a child and becoming a family. When conventional methods fail, will the couple muster enough courage to seek out the alternative, or will they stay a duet forever?

Enter Chestnut—a daring filly from beyond Equestria, out of their social stratum, and definitely exceeding their boldest expectations.

For better or worse.

After Queen Rarity once more rejects the advances of one of the many noble ponies who seek her affection, Princess Sweetie Belle finds out that her sister is secretly in-love with somepony else, thus her heart-breaking streak. Alone in the throne room with her sister and the royal body guard, Twilight Sparkle, the young princess decides that she's going to find out the identity of Rarity's secret crush, no matter what.

Part of the Bodyguard!AU Series, based on Earthsong9405's AU where Twilight is the bodyguard to a "Princess/Queen Rarity". Prior knowledge of the AU is not necessary to read the story.

This story is a sequel to The Luna Cypher

Twilight sets out to learn more of the ways of the world, and soon decides that the whole planet is disorganized, insanely dangerous, and desperately needs to be fixed. And she's just the mare to do it... with a little help from her friends.

Also, there are sky-pirates!

Book 3 of the Alicorn Adventure series.

A few extra, slice-o-life chapters are here: On the Rocks

Cheerilee decided that she would allow each pony in her class to choose what the nature of their homework should be. That was her first mistake.

The second was to think that Scootaloo was serious.

Humans.

Truth or myth? Ancient lost civilization or just an old pony's tale?

No pony has ever seen one, and most haven't even heard of them. But Lyra knows that these wonderful creatures are more than just old legends, and she's going to find out... and possibly drive her roommate insane in the process.

Strumming Heartstrings of the Equestrian Intelligence Services is on a mission. A mission from ... well, actually she just made one up for herself. Sure, she has her actual job of keeping an eye on Celestia's ex-student Sunset Shimmer, but that's not enough to occupy all her time. After all, Sunset seems to have gotten a bit better about not getting herself into too much trouble. Sometimes. Occasionally.

Thus, when Strumming encounters a mad zebra seemingly obsessed with getting revenge against the gryphons who injured him years ago, it seems like it might be an interesting diversion. Little does she know there's more to this case than meets the eye...

“Anything that happens, happens.
Anything that, in happening, causes something else to happen, causes something else to happen.
Anything that, in happening, causes itself to happen again, happens again.
It doesn't necessarily do it in chronological order, though.”
- Douglas Adams, Mostly Harmless

Twilight and Minuette discuss Starlight Glimmer's timeline disruptions.

Twilight just wishes the conversation had happened in chronological order.