Losing a child is the most terrifying thing that can happen to a parent.

Sunset Shimmer had been gone for years. Celestia had never really given up hope that she would see her again, but the doubt had always been in the back of her mind: what if she never returns? The echoes of their last fight followed her all those years.

And now that Sunset Shimmer has returned, Celestia wants to see her again. She has an offer to make, to a filly she raised as a daughter.

It's just been a few days since the friendship games, but something drastic has changed. The solar system of Earth isn't what the inhabitants of the planet are used to. Plus there are two teenage, high-school students, who control the most important objects in the sky.

Editor: GaleSinger

"...The test ends when you open that door."

Princess Luna has begun searching for her own personal student, and her test has hit a small snag: Not a single unicorn, out of the dozens of applicants, has passed. In fact, every last candidate has failed the test in seconds.

But just what is the purpose of this test? And how can somepony pass it?

A young earth pony named Morning Glory is going to find out.

She can swim far and wide across the waters of Equestria, but it's not enough. There are places above those waters, places she plans to reach. Where biology failed her, her mind would succeed. Equestria better be ready, because she plans to visit!

MLP/Undertale crossover.
Not a PWNY-verse story.

Long ago, the Monsters and Humans fought a great war. The Monsters lost, and were sealed in the Underground. It would take the power of seven human souls to break the barrier that kept them imprisoned. They only had six. And so the Monsters waited and hoped, praying that another human would find their way to the Underground. Some thought the seventh soul would give their King the strength to break the barrier. Some dreamed of a human who would be their friend, and save them all...or had nightmares of one who would bring back the war.

...but nobody came.

...but somepony did.

Eons after the war, with no way to tell how much time had passed above, a tiny blue filly with wings and horn fell into the underground, calling for her Mama. None knew the poor creature's nature or origins...but her soul was powerful with magic, even more so than a human soul.

None can know what will come...of this little 'Woona'.

Cover art by Sanyo21

Trying to patrol the dreams of every pony in Equestria can be stressful. To ease her burden, Luna retools the Tantabus to turn nightmares into good dreams instead of vice versa. Aware of her mistakes from last time, she tests it out thoroughly, making sure there are no unexpected behaviors. And as far as she can tell, there are none.

Except that it's started calling her "Mom".

Faced with the prospect of possibly creating life, Luna seeks out Twilight's advice and assistance. With a little luck, they can get this all sorted out before the sun rises.