User blog comment:PUNCHURPREGNANT/Gray and Silver Predictions/@comment-59.93.129.56-20140113095710/@comment-117.203.222.8-20140114060134

FTGM- maybe Deliora was treating humans like Acnologia did- pests.

NoNickNeed- It was said that using too much dragon slaying magic turned acnologia into a dragon and also he had some sort of aid from zeref. And also he killed countless dragons and bathed in their blood. And as weisslogia says, bathing in a dragons blood makes one stronger. And so acnologia bathed and used dragon force with such a great frequency that he literally became a dragon himself. Maybe !