A duel? A one-shot? An Experiment, Mayhaps one you wouldn't enjoy? Mayhaps one you would? Take a look if you so desire. (Update: As of now there is no plot, this is mindless writing.)

To most of the world, Tom Riddle is the perfect Avatar: diplomatic and prodigious, the pride of the Fire Nation. But Hermione Granger—healer, secret bloodbender, and member of a society that's tracked Riddle's moves meticulously—knows the truth. She knows what Riddle's planning once he masters the Avatar State. At the next full moon, she's going to make sure that never happens.

For 33 years, since the end of the Fire Utopia, the world has known peace and balance. Even the events 10 years prior did not threaten this. However, events are about to be set in motion that will bring the world to its knees in the coming years. Once again the world will need the Avatar to save it. Harry must step up once more but this time the threat is much closer to home.

Zuko managed to survive one year in the world of Wizards, but his mission is far from over. Strange and dangerous happenings are going on at Hogwarts. But not even Hermione can answer Zuko's question: How do you manage to lose an entire chamber? Or that should have been the blurb, but Dobby made a mistake, and pissed off the wrong Replacement Hero. (Crack Treated Seriously)

Challenge

I know it says year 3 but this is the beginning of this story, OC in the story.

Harry manages to grab onto Sirius before he falls into the veil. But instead the both of them drift away. Harry is offered the choice to move on with his Godfather and he accepts. A few friends simply cannot let him go though and follow after him. Along with one person who is just trying to run away. Their magic is different now. They each feel a strong pull one element or another.

In Azkaban Prison, on June 21st, 1994, Bellatrix Lestrange gave birth to two children, Zuko and Azula. They were immediately taken out of their mother's custody, and in due course, some years after the war, they come to Hogwarts.

Aang has finally found an Earthbender master to teach and train him. For now, everything feels like it's going well, despite everything that's happened. Except the training doesn't seem to be going well. While Aang trains, Katara goes missing and her situation continues to get worse and worse. What do these people in black cloaks want?

When the world they knew and loved vanishes in blood and despair Harry, Hermione, Luna and Draco must leave and form new lives in a new world. But what happens when they learn their new chance at life is in danger of following the same path as the last.

After being pushed through the veil, Harry Potter's spirit travels and is reborn as an airbender during the Hundred Year War. Harry/Zuko, A/B/O. Top/Alpha Harry.

Katara jamás descubre a Aang por lo que el destino cambia y todos olvidan que existio un Avatar. Pasaron muchos siglos y ahora es la madre de Blaise Zabini quien encuentra a Aang. Viendo utilidad en el chico lo adopta aprovechando que este perdio la memoria. Lo que ella no cuenta es cuantas cosas cambia la presencia de ese niño para el mundo muggle y mágico. Yaoi, Slash

After sixteen thousand years, the Avatar of Death, near the end of his immortal journey, is met by a different entity than per usual. With a universe doomed due to his past actions, the being once known as Harry Potter can only accept to try to and avert what he has caused. He was looking forward to his retirement...

Twins were rare in their world, and despite their long history, the Avatar had never been born one half of a set. The Avatar wasn't this time either. At the moment of conception, when two are created instead of one, the whole world is flipped right on its warring head. Main: Fem!Harry/Zuko. Aang/Katara. Side: Sokka/Hermione. Ron/Ty Lee. Toph/Neville. Strong AU

Leora Potter had always been a rather odd girl. Witches, it was said, didn't typically shine like a star when happy. Neither did they wield illumination like a sword, or was as swift of foot as daylight. When three mothers make a wish in dire times that binds their children together, Leora finds out what it means to be the last Aetherbender. Lu Ten/Fem!Harry/Zuko/Male!Azula.

Bellatrix comforts a distressed Azula.

He was looking for the Avatar, not some weird apparently magic girl, a witch. And of course his Uncle offers her to stay with them so she could find a way home to her friends...This was going to end badly he felt... at least for himself.

Long ago, magic's purest form is elemental bending. As the years pass, wand magic causes its eradication. Hermione Granger-Weasley mysteriously dies at fifty due to a conspiracy plaguing her entire life. In the in-between, she meets Aang and discovers her true destiny is way beyond being Minister. She prepares to go back in time to make things right but Harry changes her plans.

For 23 years the world has known peace and balance. However, after a request from a vanquished foe, events are set in motion that threaten this balance. Bitter foes unite in a common goal as the remnants of the Avatar's past enemies join forces to exact revenge. They will stop at nothing, use anything or anyone, to accomplish their goal. The destruction of the Avatar!

An unknown force transports the Ministry Six to the land of the Avatar, and leaves them stranded with no way back-and no magic. After a strange discovery is made by Luna, it's up to the Gaang to show the Ministry Six that there's more than one kind of magic in the world as they team up to take down Fire Lord Ozai.

Katara is flung into a strange world so different yet similar to her own. There are no benders, but witches and wizards. A war is on the horizon, so similar to the one that's just finished in her own world. Join Katara as she befriends the marauders and makes changes to the first wizarding war

When the Potters were attacked; Lily had placed a spell with the letters and Harry that f they died Harry would be teleported where he would be love. Fire Lord Zuko and Mai was in their garden when a light blinded them then when they could see, Zuko went to look around and found Harry and the letters. Rewrite

Who knew being Royalty would bring changes

When Voldemort stands on the brink of victory, and all seems lost, Harry Potter accidentally becomes a god and creates a new world. Compost heap. AU for both Avatar: The Last Airbender, AND Harry Potter. No (real) pairings. One-shot. Don't ask me to continue this.

Defying the Dark Lord is hard enough, doing so as a Death Eater is almost impossible. That is what Regulus does when he realizes the extents to which Voldemort will go to obtain power. For the first time, Regulus tells his story of how he became a Death Eater, defied the Dark Lord and survived on the run as he sought redemption. This is the 1st spinoff in my HP/ATLA series.