User blog comment:PUNCHURPREGNANT/Gray and Silver Predictions/@comment-98.238.233.6-20140714070016/@comment-24443134-20140726222422

I really hope that the Ice Devil Slayer magic that Silver Gave Gray isn't temporary. It would be sooo awesome if it wasn't. It probably is temporary, though. I'm guessing that Gray will use all of it to defeat E.N.D.(along with most probably Natsu and maybe Erza or Lucy), because, as Silver said, E.N.D. is a flame demon. That explains why Igneel went after E.N.D.