Christmas and the Snow Dragon

Every year the Gnomes try to disrupt Christmas by attacking Santa's workshop, if they succeed they will be treated to extra mince pies, cakes and cookies, each year they fail. Until the hapless Gnome Cedric is chosen to cast a spell on the reindeer, a spell that is doomed to go wrong. Unfortunately the reindeer are affected and cannot pull the sleigh, can Santa find a way to save Christmas?