User blog comment:IamJakuhoRaikoben/Chapter 410: Memento Mori, Review./@comment-4449950-20141123060745/@comment-4829046-20141123135544

Indeed. The use of "nothing" was quite grand and delightful. Even death isn't "nothing", it is deemed as "something", so this literally erases all concepts. I am personally attached to the 'complete erasing of existence' concept. Not only is it of spiritual and philosophical significance but a great way of defeating immortals that are supposedly not meant to die in conventional ways which would mean that even if their body is destroyed, their mind would still be there, albeit scattered around. This way, not a single atom is left. My irk is that it was literally the "final move" and one he was saving. Now not only did he use it on mere humans, but Zeref most probably got a very good glimpse of it. And even if he doesn't care, at least Acnologia would, on the off-chance he saw it while chasing Igneel.

Now the disappointment is that for obvious reasons, Natsu and Gray have to return, meaning that their deletion would be undone(Ctrl+Z) and his marvelous tactics would be in ruins.

However, this makes me think Lumen Histoire will play a part. I'm not sure whether the coinciding of Memento Mori and the activation of Face is relevant, but if it is, then some serious spatial mambo jumbo is a-coming.