User blog comment:EvanDude345rv5/Fairy Tail 335 : RIP Ultear/@comment-5782007-20130616032455/@comment-1359322-20130616043239

A nice and possible theory. And for some reason after reading your theory i've been feeling that Natsu will most probably gain the elements of the other Dragon Slayers becoming a 7-Element Dragon and battle Acnologia.