This story is a sequel to Avatar: Legend of Diamond Tiara. Book 1: Harmony

Silver Spoon has embraced her role as the Avatar of Discord and Diamond has fallen... or so it seems. Is all hope truly lost? As the world of ponies and spirits begin to mix and ponies rise up to, once again, fight off the power of Discord, more questions arise and the true roles and destiny of the Avatar begins to take hold. Will this be the true end of Harmony, or just the beginning of a new world entirely? The final book in the Avatar series and the culmination of years of work, plotting and scheming awaits.

Image by Silfoe, Amazing work as always.
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.
My little pony: Friendship is magic and all associated characters, storylines, and materials belong to Hasbro, and was made incredibly awesome by Lauren Faust.

Princess Celestia is a frequent visitor to the Astral Planes, the ancient world of spirits and immortal souls. She considers it a good way to unwind after a long and difficult day spent ruling her nation. On one such journey she finds herself sharing tea with a kindred spirit.

A crossover with the Avatar: The Last Airbender Universe.

I've had this idea for awhile now... a crossover between Avatar the Last Airbender and My Little Pony! It's more of a story inspired by Avatar with lots of the show's lore in it. ///

Earth Pony. Pegasus. Unicorn. Alicorn.

Long ago, all four of the pony species lived together in harmony. But everything changed when Discord attacked. Only the two Alicorn sisters, Celestia and Luna, could stop them. But when the world needed them most, they vanished.

However, right before their disappearance, the two of them created a new kind of power: The Four Elements. The power of these elements were scattered around the pony realm, and now many ponies have the powers of water, air, earth, and fire. Using their newfound powers, the ponies began fighting against Discord's reign.

But the ponies are slowly losing hope that the war will end. The only way Discord will able to be fully defeated is with another Alicorn. but all of them have died.

or so they thought...

QUICK GUIDE:

Fluttershy and Applejack are earthbenders.

Rainbow Dash is a firebender.

Pinkie Pie has no bending.

And Twilight is the Avatar.

Rarity is still undecided

General Iroh. Fire Nation hero. First born son of Fire Lord Azulan. The Dragon of the West. It was thought he would be the greatest warrior in the history of the Fire Nation.

But all that changed when the war claimed his son's life. This changed him, and he turned his back on the war.

This was a necessary event. Iroh had a role to play in bringing balance back to the world...but to play that role, he first had to be broken down, so that he could be rebuilt. This truth was self evident in the spirit realm.

But one particular spirit felt this was unfair to Iroh. The wheels of fate are cruel to those caught in the gears, but this particular spirit felt that Iroh deserved kindness. And so this spirit sent Iroh one who would help him to rebuild himself.

And so, shortly after his son's funeral, Iroh would find a creature sent by the spirits, the likes of which he never would have imagined...a pretty pink pony princess.

Somepony to love...and be loved by.

Part of the PWNY-verse.
Edit: Now with Fan Art by Mewappony.
Edit 2: New Cover Art by Sanyo21!

Water, air, earth, fire, Long ago the 4 nations lived together in harmony but then everything changed when the earth kingdom attacked only the avatar master of all 4 elements could stop him but when the world needed him most he vanished one hundred years passed and my brother and I discovered the new avatar a fire bender named Flash and although his Fire bending skills are great he's got a lot to learn before he's ready to save anyone but I believe Flash can save the world.

When I was little my grandmother told me stories of the old days when the avatar keep peace between the water tribes, earth kingdom, fire nation, and air nomads then everything changed when the earth kingdom attacked. Only the avatar mastered all four elements only he could stop the incredibly strong earth benders but when the world needed him most he disappeared. One hundred years have past and the earth kingdom is nearing victory in the war two years ago my father and the men of my tribe journeyed to the air temples to help fight against the earth kingdom leaving me and my brother to look after the tribe. Some believe the avatar was never reborn into the fire nation and the cycle is broken but I haven't lost hope.

Azario and Protonic PC-77 accidentally traveled through a wormhole whilst zooming aimlessly through space, crash-landing somewhere unfamiliar to them. Isolated on an unknown planet, and their ship in need of repairs, the two lone members of the Silver Saturn Squad found themselves engaged in a rather interesting series of developments that involved an enraged worker from a chariot company, the dungeons at Canterlot, and a strange fire in the Everfree Forest that seemed to correlate with many ponies suddenly falling into a deep sleep and then disappearing from existence.

This story isn't about two foreign beings tumbling into Equestria. This is the story about the land of Equestria following annexation by Council Supreme only one year later, thanks to the valiant champions of the esteemed Silver Saturn Squad. This is the story about a few ponies living underground, trying desperately to live normally when they find they've just barely escaped a nearly complete global abduction. This is the story about the struggles of expansionism and liberty. This is the story about a great time of trial and testing in Equestria's history, and a surprisingly pivotal event in intergalactic history that would be spoken of for eons to come.

But most of all, this is a story about two other foreign beings in Equestria, trying to help a sad princess.

Upon arriving in Hell, you meet Rimmer: a popular clopfic writer. He turns out to be an enigmatic, and frankly concerning individual. Reluctant to share the story of how you yourself ended up in eternal damnation, he instead shares his own. Turns out that it involves a galavant into the pure, innocent world of Equestria, where he then extorted one of their princesses and used her magic to summon a harem of waifus from a myriad of alternate universes and makes them all sit on a couch with him.

This is precisely why magic is not allowed in the human world.

Warning: This is a crackfic intended for comedic purposes! It's not my fault if you try to take this seriously! (At least that's what my lawyer told me). There are so many more crossover series that I could/should tag, but fimfic will only let me tag three of them. Want a complete list? Then look at the cover art, I ain't listing them all here.

Water air earth fire Everyone thinks the avatar is gone but in truth he's alive he and his friends will save the day.

A time of peace, that is what the war brought, stability, that is what the revolts brought, but now that the world is united as one, things have reached the most dangerous and pivotal stage in existence.

Boredom, simplicity, peace, these things can be dangerous, especially when your a kid who just wants something new and exciting to happen.

A young girl visits her sister tribe with her family, and somehow ends up on everyone's favorite hunk of rock known as Equestria.