User blog comment:Miskos3/Fairy Tail 528: Dragon of Magic, Review/@comment-24403746-20170325195920/@comment-30462872-20170326075454

I think Acnologia just found a way to use the purest form of Dragon Slayer Magic, the pure Dragon Slaying energy. He probably can use all elements, he just chooses not to so that he doesn't become vulnerable to another Dragon Slayer. Seriously though, if Wendy does turn out to be Acnologia's daughter, he is gonna be mega ticked off that his own kid thought it was a good idea to use Dragon Force against him. Speaking of which, Wendy should be exhausted at that point, how can she still use it? (other than the plot requires it).