User blog comment:CNBA3/Operation Face/@comment-7418318-20140605203738/@comment-7418318-20140605210550

Your right. "If we can not eliminate this magic power" was the quote, but unless it's a translation error, this would still leave the possibility of him not speaking about magic power in general, but something more specific.

Even if your interpretation is correct, it would still seem that a magic free zone would be enough to revive E.N.D. since even Face wouldn't have eliminated the magic from the entire world, but "only" from the continent.

So maybe Mard has some way to create a small magic-free area, but to do so must obviously be harder to achive than they thought activating Face would be, otherwise they'd just have done that instead.

But if we assume that the "this" in the quote was there for a reason then maybe there is something at work that actively prevents the ressurection and is also hidden from the Demons. Eliminating magic on the continent would also have shut this thing down, but now that Face is no longer an option, Tartaros has to look for it the hard way.

And just now I had an even crazier thought. What if this seal was inside of Lucy? It could be the reason why she was not affected by Alegria.