User blog comment:IamJakuhoRaikoben/Chapter 401: Igneel vs. Acnologia, Review./@comment-5303512-20140923010632/@comment-25111584-20140923051537

If Face activates, there's no reason to believe that it won't destroy the magic power stored in all mages along with the magic power in the continent; in fact, it mp does. Then the situation will be like FT's when Azuma emptied them of their magic power. Retreat? Heck, they won't have any strength left to reatreat.