User blog comment:IamJakuhoRaikoben/Chapter 464: Natsu vs Zeref, Review./@comment-153.91.253.204-20151130200254/@comment-4829046-20151202104830

I feel some of this could have been avoided with a pic of Natsu using that Dragon King Flame attack prior to the invasion. By what was stated by the man himself, Natsu would lose even that. I just see a final Getsuga Tenshou parallel, where the MC has to go into a special mode in order to use the full brunt of the power on the foe and then loses all the power he possessed prior to the mode activation once the time limit is reached.