Now that Dethon is defeated, Mana Spark can do what he originally came to do; fix his ship.

And learn, of course. Hopefully Discord proves to be a good teacher.

He just wants to learn, but so does Twilight.

People, I can't fix what's wrong if you dont say anything. And if you are just thumbing down after reading the description, you probably shouldn't, since you have nothing except a short TLDR of a TLDR to form an opinion on.