One day, Princess Twilight Sparkle came down to her throne room in her sparkly crystal castle and found a young human girl sitting in her throne...who, apparently, is her castle.

Just as Twilight is growing into her role as a Princess, her castle is growing into its role as a Tree of Harmony. And like any child, it needs...guidance.

The only problem: Little Tree is a bit of a brat.

This story is ENTIRELY FoME's fault.

After accidentally turning herself into a stallion from a backfired spell, Twilight 'Dusk Shine' Sparkle frantically seeks the help of Princess Celestia. In Canterlot, Dusk Shine fails to find his mentor, but does find solace from those closest to him.

* Takes place prior to S3

Twilight had never questioned the nature of the Tree of Harmony. To her at least, it stood as a sentinel, a silent guardian watching over Equestria and keeping disharmony at bay.

She soon starts to have questions and misgivings when she inadvertently witnesses the horrifying fate of hers and the rest of her friend's twisted doppelgängers. Did something happen to the Tree of Harmony, or was it always this way?

Twilight aims to resolve this mystery once and for all. Little does she realize that this mystery goes far deeper—the truth far more terrifying than she can imagine.

Will she be able to solve this nightmarish mystery with her sanity intact, or will she surrender and be lost to madness?

After some deliberation I chose to put a Crossover tag as the whole story uses many assets from several stories in the Cthulhu Mythos (most of them written by authors other than Lovecraft).

Fantastic cover art done by Mix-up!

This story is a sequel to A Talk With the Tree of Harmony

With the Tree of Harmony gone, the Map in Twilight's castle has gone dark and, despite her best attempts, Twilight is unable to reactivate the Map now that its source of power is gone.

Until one day, when her and her friend's cutie marks suddenly begin to glow with a slowly fading light, like a dwindling soul crying out for help...

Proofreading done by RQK and the cover art was provided by Ultra-the-HedgeToaster

When Twilight returns Cerberus to Tartarus, the last thing she expects to find and happen is to meet the ruler of the realm herself.

Even less so when that pony, Penumbra, turns out to be an alicorn. As she spends more time with the mysterious mare, Twilight finds herself drawn to her.

Unable and unwilling to leave Penumbra alone, Twilight strikes a deal with her to allow her to leave Tartarus. A deal that will change both of their lives.

Twilight Sparkle may be an alicorn, but there was a time before she became a princess. Before she became a bearer of harmony. Even before she became a faithful student.

The following is a list of events from before Princess Luna's return.

Part of my 'Of Immortals' series.
I have no plans on ending this story. Just adding to it when I think of new ideas.

This story is a sequel to Equestria’s Changeling Queen and the Abyssal Empress

Story requires reading Equestria's Changeling Queen and the Abyssal Empress first.

This is the life, times, and fall of Empress Samudra, predecessor to the Kelpie Empress Tethys, covering the decisions she makes from her perspective.

This story is a sequel to Princess Celestia: The Changeling Queen

This story is a direct sequel to Princess Celestia: The Changeling Queen. Reading that first is necessary to understand any part of this story.

Co-authored by vren55 and Zervziel

Alternia, sister to Chrysalis, ruled Equestria for a thousand years, disguised as Princess Celestia, while the alicorn slumbered in a healing sleep. Now revealed, Alternia prepares to become Equestria’s first changeling princess, and prove herself to the ponies she loves at the side of her co-rulers Luna and the newly-returned Celestia.

But even as the crown descends onto Alternia’s head, something is stirring in the depths of the Eastern Sea, something that will turn the surface world onto its head. Some power that could destroy Alternia, and all that she loves, before she can even regain the approval of her own ponies.

Will Alternia restore the trust her ponies once placed with her? Will she found a hive? Will she find love?

All that is certain is that Equestria, and the world, will never be the same again.

Now with a TV Tropes page.

Empress Tethys and the Kelpies Created by Zervziel

That Fantastic Cover art is by Plainoasis

Pre-read and edited by:
Blankscape,
FinalFan,
Courage Fire
Cosmic Cowboy

This story is a sequel to My Little Paper Mario

Twilight and Princess Peach are having themselves a princess vacation in a faraway land, starting in the ragged port city, Rougeport. They find a mysterious treasure map given to them by a mysterious trader, and not wanting to leave their friends out on discovering something exciting, they deliver letters to both Mario and Twilight's friends in Equestria, detailing their findings along with sending the map to the heroic plumber in red, and the gang set off to Rougeport to join the two princesses.

A far more dangerous game is afoot than Bowser's almost successful attempt months prior with the power of the Star Rod. A new enemy stands in their way, wanting to discover what lies beneath the port city, and they will do anything to open what is known as the legendary One Thousand Year Door. Not only that, but they have also managed to kidnap both Peach and Twilight, taking them hostage while the leader of this new group plans to uncover what secrets are hidden beyond this millennial doorway. Will Mario and co. be able to surpass this new foe and claim the treasure for themselves, or is there something far more sinister lurking deep below the land that could wreak havoc on the world?

It looks like Bowser has another plan to kidnap Princess Peach...again. But, it looks like his plan will succeed when he does the unthinkable: stealing a mystical wand called the Star Rod, said to grant any wish to anyone who holds it, sealing away the Star Spirits, 7 powerful star beings that watch over the land and grant wishes to those with a good heart, and using the Star Rod's power to take over the Mushroom Kingdom, defeat his nemesis, Mario, and make Peach his.

Meanwhile, in Equestria, Twilight had managed to come up with a spell to transport to other dimensions without the use of a portal. Eager to try it out with her friends after her experience in the human version of Equestria, and a few experimental tests with other objects beforehand, she casts the spell to transport them, only for it to backfire, sending them into the Mushroom Kingdom. Stuck in this new world until Twilight can find a way to safely get her and her friends back home, the Mane Six will have to team up with Mario and new friends in this new world to stop Bowser and save the Mushroom Kingdom from his tyranny.

My Little Pony: Friendship is Magic is owned by Hasbro.

Paper Mario is owned by Nintendo.