User blog comment:Miskos3/Fairy Tail 520: Dragon or Demon, Review/@comment-7418318-20170205011820/@comment-1359322-20170205095108

Natsu who can't eat God Flames managed to eat it, Natsu who can't eat other elements besides fire managed to eat Etherion and Laxus' lightning and Erza who can't cut through Dragon scales managed to cut through one.

Methods can be thought up anytime by Mashima, he already showed that time and time again. =__=