She is the last. All her kin are gone. They'd either been blown apart by the Friendship spell so many ages ago or, in the case of her sister, changed their diet from hate to love. Cryoxia is the last of the windigos, but she is determined to be different, to never go back to those days ever again.

She'll make friendship from hate. She'll adopt an alicorn foal as her sister. She'll take physical form and learn how to move the celestial orbs with her mind. Celestial... has a nice ring to it. And she'll ally with the other nations in the world, establish friendship and preach harmony, no matter how they may diminish her food source. She'll make a world so wonderful that it will starve her to death.

Or die trying.

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For antiquity, featured 10/9/14, 10/13/14 -10/16/14

I am Cold, swirling snow that turns ponies against each other, searing ice that freezes them solid. I am Survivor, the one the Friendfyre spell didn't catch, an exception that proves an impossible rule. I am Fear, Frustration, Anger, Hatred, every emotion my Creator has ever felt. I am her Future. I am her Past.

I am Demon, and Clover the Clever is my Master.

Winner of Equestria Daily's Outside Insight Summer Fanfic Contest.

Featured in The Royal Canterlot Library on March 6th, 2015.

A normal day was all it took.
A simple failed prototype, a missed experiment.
There was an explosion, and I woke up. I don't really know what happened between those two events, but I'm fairly certain I shouldn't have awoken in a small, dark box.

I'm scared.

Cover art by the amazing Avatar of Madness!

For the past ten centuries, Princess Celestia ruled alone with a gentle touch, waiting for her sister to return from exile. Twilight Sparkle reunited her with Luna and banished Nightmare Moon away.

For the past ten centuries, Queen Solar Flare ruled alone with an iron hoof, accepting that she would never again see her sister after Nightmare's mysterious disappearance. Until one fateful day when she too was reunited with her sister, thought long dead.

But years later, when Luna discovers a tether of Nightmare Moon's magic in her mind, the veil is breached once more. What strange interactions will occur when the symmetry between these two worlds is broken?

[/hr]
For antiquity, featured 10/29/14, 11/22/14, 12/18/14

Failing once in her attempt to take Canterlot and failing again in her attempt to take down Twilight, one would think Chrysalis would have cut her losses and let things be, but the queen has once again appeared, this time in broad daylight with no disguise and no army. Her weapon of choice? Diplomacy.

Now Twilight is having to deal with the changeling queen, but surely putting up with her antics will be worth the knowledge she's willing to provide about her mysterious race and the potential undiscovered agents still within their midst...right?

Takes place before Magical Mystery Cure and diverges from there.

With thanks to MisterGunpowder for proofreading and editing.

Revision History:

05/09/2015: Chapter 1 updated with millions of little corrections.
05/20/2015: Chapter 2 revised and edited with another million small and large corrections.
06/12/2015: Chapter 3 given a thorough editing and revision.
06/23/2015: Chapter 4 taken to the gutter and edited twice to be sure.
07/14/2015: Chapter 5 thoroughly brutalized with the editing stick.
08/03/2016: Chapter 6 finally edited. Yes, I'm still alive, dammit.
09/29/2016: Chapter 7 fell out of the editing tree and hit every editing branch on the way down.
10/26/2016: Chapter 8 has emerged from the editing emergency room.
11/17/2016: Chapter 9 found and edited. No casualties reported.
11/30/2016: Chapter 10 treated for whiplash after lightning fast editing.
12/22/2016: Chapter 11 edited. Chrysalis shot first.
01/17/2017: Epilogue edited. Time to hit the cider.

This story is a sequel to MLA: Perihelion

It's been a handful of years since Twilight came into her own as a Princess of Equestria, a few years spent in peace and harmony without so much as an angry spirit or clandestine invasion to take away from the tranquility of Equestrian life. Unprecedented developments in the technological and thaumaturgical sciences seem to be preparation for something, though nopony realizes what that something might be.

Nopony except the Princesses, who have not failed to see the signs of impending disaster that began with the mass kidnappings just following the Summer Sun Celebration. When all their preparations are turned upside down, can an alliance with the mysterious Precursors turn the tides of the most devastating war in Equestrian history, while there is still anything left to save? Enemies and allies appear in the most unlikely of places, and friendship with a dying elder race can be more dangerous than an invasion of Dragons and Changelings. What is a pony willing to give in defense of harmony? What are they willing to sacrifice?

This story now has a companion piece, The Sunset Campaign! This story is designed to bring Harmony Defended more into line with the three-story version of My Little Apprentice. If you read Apogee and Perihelion, you may want to read that as well!

This story was written prior to season five, and as such any events which transpire therein may or may not be treated as canonical. All events up to and including "Twilight's Kingdom" are treated as having occurred, however.

A huge thanks to my Alpha Readers! Thanks to these wonderful people, new chapters aren't nearly so riddled with mistakes and errors as they used to be. Thanks to Sparktail, TwoBit, Withered Pyre, and Zutcha. Zutcha of course deserves double the love, since he's also the artist of the cover and any other fantastic art that finds its way into the story.

Twilight Sparkle has too much magic, and it will take her decades to learn to control it. Her spectacular loss of control during her entrance exam only proves that fact. She is a danger to herself and others.

After Sunset Shimmer’s disappearance, Princess Celestia needs a new student to bear The Element of Magic to defeat Nightmare Moon. With all of Equestria at stake, Twilight Sparkle…is not the pony she needs.

Princess Celestia seals Twilight Sparkle’s magic with the distant promise of one day teaching her.

But there are two diarchs of Equestria. Amidst a lucid dream, an offer is made.

“Hello, Twilight. Would you like to be my student?”

Cover art provided by Lafiir.

Diamond Tiara knows all about work delegation: if you want something done, have other ponies do it for you. In the name of that goal, Silver Spoon studies for both and Diamond copies her friend's efforts. It works every time. Except that Cheerilee just forced Diamond to switch desks. And with finals a week away and no personal knowledge for most of the subjects, the only ponies she can now hope to copy from are Snips and Snails. Something which may get her sent all the way back to preschool. And there's no way Diamond is going to lower herself to doing her own work.

Which means the colts are going to be learning on her behalf.

No matter what she has to do to make that happen.

It's for the best cause ever, after all.

(Part of the Triptych Continuum, which has its own TVTropes page and FIMFiction group. New members and trope edits welcome.)

Now with author Patreon and Ko-Fi pages.

Cover art by GroaningGreyAgony

Certain alicorns have no regard for the rules of space and time. An astral sub-dimension becomes a potent weapon in what appears to be a divine prank war. Shining Armor hits the sauce.

Written for this contest thinger.

Her Royal Highness, Princess Luna, is trying to catch up on lost sleep. She deserves it, after all the hard work she's put in to keep the city of Canterlot safe. Now she can turn the lights down, slip into bed, and finally get some rest.

If only Canterlot weren't under attack by the endless swarms of the Changeling army...