User blog comment:Longlivemerlin/Temporary? Or Permanently? Magic reveal talk! (SPOILERS FOR EPISODE 12 & 13!)/@comment-4190137-20121218043515

Well Belgianmerlinlover came up with a very interesting [http://merlin.wikia.com/wiki/User_blog:Belgianmerlinlover/I_think_I_know_how_it_will_end. theory] about Merlin losing his youth (his younger self) to get his powers back.