Talk:Rainbow Dash/@comment-26973802-20140427153949

(spoiler for Twilight's Kingdom)

The villain is a cosmic entity similar to Galactus and Rainbow Dash destroys him with a Sonic Rainboom. Then the Mane 6 use their keys to open the Mystery Box and Rainbow Dash becomes the princess of Rainbow Kingdom.

...jk lol, I made that up based on jokes of Galactus and the fact that it's called "Rainbow Kingdom", but the episode is called "Twilight's Kingdom"