User blog comment:Omega natsu2/Chapter 387: Tartarus Arc, Part 4: Father and Son, Predictions./@comment-77.194.131.35-20140606084105/@comment-77.194.131.35-20140606090131

so basically, if Face is activated, only the magic on the continent will be wiped out, the other countries will have a tactical advantage, and a magic war with ennemies who have magic could occur. If we think about it, the only who coul escape this fate could be Lucy if the spirit king take her to the celestial spirit wolrd during Face activation, no other humans could use magic. It seems Mashima planned to introduce the one magic, and the only who know about it is Lucy, it will be a good story, imagine Lucy trying to find a solution to restore magic wandering in a wolrd similar to Mad Max one