Humans.

Truth or myth? Ancient lost civilization or just an old pony's tale?

No pony has ever seen one, and most haven't even heard of them. But Lyra knows that these wonderful creatures are more than just old legends, and she's going to find out... and possibly drive her roommate insane in the process.

"OH! That would be the Elements of Harmony! They're the neatest thing! We each get a jewel necklace--Twilight gets a sparkly tiara--and we used them to defeat Discord and Nightmare Moon with rainbows that go pewpewpew-!"

A clawed glove wrapped over Pinkie Pie's lips, silencing her.

"What does the pink one speak of, pony?" He demanded of Twilight, who sputtered at his question. "Do these 'Elements' hold the power to resurrect humanity?"

"I'm... not sure." She returned, halfheartedly. "They're pretty powerful..."

"Where are they?"

"In Canterlot, the city on the mountains, but-"

He dropped Pinkie and stomped off, leaving her to flop around her stretched-out lips. Twilight saw that he was going out the door and in the direction of the city she had mentioned.

"W-wait! Stop!" She galloped after him.

The Princesses find an alien creature barely clinging to life at the scene of a terrifying crash. Can the Combined Power of the Elements of Harmony save it, or more importantly, should they save it? Will the arrival of this strange creature tear Equestria apart?

TV Tropes
https://tvtropes.org/pmwiki/pmwiki.php/FanFic/Article2

If you came to hear a story, I’m sorry to disappoint. I suspect this’ll just end up as one big confession, really. When you’re the first Teutscher to set hoof into Equestria, I suppose that’s to be expected. And when you’re the universe’s favorite chew toy, doubly so. Still, with enough wit, some Prussian ingenuity, a droll sense of humor, and wanton murder, I might just survive this. Then again, when you’re going up against an unending list of things like government conspiracies, that guardian angel who keeps telling you to kill ponies, psycho Equestrian girls with allophilia, a lunatic princess, the legions of the Inferno, the Equestrian culture itself, swashbuckling sword fights, and laissez-faire economists, you begin to realize why there’s a big “if” in the middle of your life.

Your thoughts/critiques/deathreats are welcome in the comments. Spoilers are also encouraged. If you don’t have anything to complain about, do please tell me what you liked so I know what worked.

Now on TV Tropes. Posted on the Equestria Daily 5/28/13. Now in ePub format for your convenience.

Me is the best friend I could ever hope to have. Me is always there in the pond waiting for I. I love me.

Hope is the faith of the young. Losing everything she holds dear, Puppysmiles embarks on the adventure of her life to find her mother, her hopes of meeting her again driving her through the horrors of a world not of her making. Too bad the Wastelands doesn't care about hope.