User blog comment:- Darkchylde/Acnologia's Element?/@comment-16344653-20120321190141/@comment-24.113.140.103-20120616022917

I was looking at acnologia's breath attack, and I noticed that it looked alot like an Etherian blast(the magic weapon that the magic councile uses). And Etherian is pure magic energy from almost every elemental magic, so maybe the black dragon doesn't have just one element, but many others combined. Natsu is a good example of this(fire and lightning). I also thought that could explain why none of Fairy Tail's attacks didn't work, even with four dragon slayers(including an artificial one) on their side.