User blog comment:FairyRaven/Fairy Tail Chapter 387: Tartarus Arc, Part 4: Father and Son, Review and Commentary/@comment-7418318-20140606101001

Regarding the Faces.

Now that we know that there are many Faces, it makes more sense that it's the continent that would be affected rather than a spherical area around Face. I suppose that means that each Face only has a shorter range, but they are spread out pretty much everywhere.

That might result in the Legal Guilds and Council Remnants being able to save the populated areas, but still end up with magic-free zones in more remote places. That'd be an interesting development, since it would allow the Demons to have a few playgrounds for themselves where they can do pretty much whatever they please without anyone being able to stop them. Particularly E.N.D.s ressurection.

I wonder if the destroyed Magic Power is somehow converted into Curse Power by Face.

But there is one thing I've been wondering about: Why are those Faces so close together?