Locating an artifact buried deep underneath one of the ancient places of study. An artifact is discovered. Though unlike many of his other artifacts there are no legends about it, there are no words or even vague writings save for one small message that they believe was written in blood found with the obsidian mirror
"some powers are not worth studying"
The only piece of the page able to be read. Naturally Starswirl the bearded's biggest fan nearly abuses her authority to be able to be first to study the artifact and of course gets sucked into the mirror to find a land filled with strife and danger. A land that the powers of friendship are not very well able to help anything with. Join the princess of friendship as she grows up, learning real lessons of honor, duty, and more mature lessons of life and the cost of ruling a nation. Will she triumph over her trails or fall victim to the many MANY dangers of Nirn.

He has faced the impossible...and failed against the impossible. He has had the chance to return to his home, only to sacrifice the chance for the sake of others. He is the prince of a fallen kingdom who has given everything to make up for the past. But now the samurai's journey takes him to a land of peace and friendship, where he has one more chance to make it back to the past. One more chance to undo the future that is Aku.

Written after season four. And yes, Jack will be a pony. In the past crossovers I've kept them as humans and for this one I wanted to try something different.

I own nothing.