User blog comment:B214/Chapter 499: Gray & Juvia/@comment-4933386-20160829110259/@comment-29693708-20160901175006

yeah, if Hiro actually explained the rules and capabilities of the various magics (like the nen abilities in hunterxhunter are explained) then the effects and uses of those magics would be nice and logical and not plot convenient ass-pulls; or at least not obvious ass-pulls.