Sheogorath, Daedric Prince of Madness. Ruler of the Shivering Isles. Crafter of dangerously unstable magical artifacts. Cheese aficionado. A lonely old man.

Discord, Spirit of Chaos and Disharmony. Once Ruler of Equestria. Master of unraveling reality. Maker of cotton candy clouds filled with chocolate rain. For some reason an infant.

Now read of this pair as Father and Son.

...abandon Logic, all ye who enter here.

Part of the PWNY-verse.
New cover image by ProfessorCatPro

This story is a sequel to Upheaval: Reckoning

Equestria's fragments have reunited, and the power of sunlight shines once more within Celestia. With the remnants of the Old Kingdom destroyed, the Abyssal Throne sent away, the threat of Gravitas defeated, and Black Rose no more, Equestria now faces the encroaching darkness of Oceanus and his rebels.

But the stage is not yet fully set. Twilight Sparkle and her friends must gather what means they may before the battle is joined.

Cover art provided by Captain Nibbles

This story is a sequel to Upheaval: Breaking Point

Following the events of Breaking Point, Twilight Sparkle and her friends discover that Equestria's demise may not come from an enemy invasion, but from within. The Barrier Lands and the Heartland begin the slow and uneasy process of reuniting into a single Equestria, but this long-delayed joining is already in danger at its conception.

With Celestia's power in her grasp and her agents by her side, the wheels of Black Rose's plans for Equestria's future continue to turn. However, her brazen gamble has done more than just bring down a centuries-old barrier. Ancient powers begin to stir: the remnants of a dark period in Equestria's history, the immortal inhabitants of Celestia's homeworld, and a rising tide of darkness coming ever closer.

Equestria is a land of magic and harmony, a peaceful realm ruled by immortal and benevolent monarchs. At what cost is this possible?

Following the discovery of a strange and powerful device, Twilight Sparkle is whisked away to the edges of a land she thought she knew so well. Here, surrounded by ponies whose very existences have been kept secret, she must contend with vicious enemies, hostile allies, and the truth.

Chapters 1-16 edited by KiltedKey

Avengers: Age of Ultron crossover.

Ultron’s plan had come to perfect fruition. There would be no more war, no more chaos, because the ones who caused it all would be gone. In just a short moment, the world would be saved from its true demon. Humans.

It would have all been so much simpler…if it wasn’t for them.

The Avengers.

As it is said, as it always will be, true peace can only be granted through countless innocent lives. In hindsight, the ponies were never that different from humans. Ultron’s plan is not yet over, and soon his strings will be severed…for the last time.

Big shoutout to Shrekzilla for his amazing job on the artwork!
Sequel: This War of Ours

After being freed from their bonds, the Emotional Entities seek out a world where they can live in peace and harmony. What better place to live than Equestria, a land which embodies the very powers of will, hope, compassion, and love. But can the entities of the Emotional Spectrum fit in with the pony race? And can they truly escape the turmoil of the universe they left behind, or will a new War of Light be ignited?

Edit: New cover art, courtesy of myself.

SPOILER!: This contains lore and what the Warframes really are. If you haven't played the Second Dream quest and don't want to be spoilt, do not read until you complete it.

My name is Karn, it's been over one-thousand years since I became a Tenno.

I've faced all sorts of horrors and challenges.
The grineer, a race of clones, seeking out others to stabilize their own DNA and hating anything or anyone not like them.
The corpus, a conglomeration of commercial and industrial interests, they acquire Orokin technologies and warframes to trade and sell using any means necessary.
The Infested, an ancient plague created by the Orokin to combat the 'Sentients' but has spread throughout the system.

Me and the new Tenno Greavus who uses the new Nekros warframe were sent to assassinate a grineer general, but Greavus struck a deal with the grineer and left me within the ship while the grineer tried to take my warframe for experimenting. Long story short, they failed.

I barely managed to escape to the void in an attempt to take down Greavus, but my Orbiter and Liset are damaged during flight.

My Orbiter exits the void right above a bright planet. With its engines down, the ship crashes right into a city on a mountain during an invasion.

I arm myself and leave the Orbiter, but for the first time in centuries, I'm not prepared for what greeted me... Small colourful equines.

Warframe/MLP crossover, image is my rhino warframe and the one used in the story.