User blog comment:FairyRaven/Fairy Tail Chapter 399: Wings of Despair, Review and Commentary/@comment-5593752-20140908132855/@comment-9595671-20140908141548

I know what you mean, but regardless of how much stronger you got we have to remember Acnologia was powerful enough to kill hundreds or thousands of dragons. And the Dragon Slayers barely could even hurt the 7 weaker dragons from the Eclipse Gate. Even if all 7 of them fight the question is how do they fight something of that level? I already came up with a theory that Acnologia is Dragon Etherious hybrid.

Maybe, that seems interesting. Though since Ancologia is present I wouldn't be surprised if he's simply going to only bother with END or if he's hear to destroy all the faces which are a threat to him as well somehow. Now I'm even wondering if another Dragon SLayer will show up.