Talk:Magical Mystery Cure/@comment-86.186.5.14-20130130180703

"Twilight accidentally casts a spell that switches the Cutie Marks and destinies of all her friends. The only way she can reverse the spell is by writing her own magic"

I'm guessing something simple, Twilight switches place with Celestia or Luna becuase the the Cutie Mark changing spell, and when she fixes it all, she turnes back to normal.