User blog comment:Darknesslover5000/Fairy Tail 258 - Sabertooth/@comment-2245892-20111106203804/@comment-2245892-20111106212354

Then again...DS seem to be an "unknown" factor in guilds. Most people don't consider them standard mages so even if Acnologia shows up every Seven years then maybe its not always known. Hmm or another way of looking at it is that maybe Acnologia has only RECENTLY become the strongest Dragon due to the previous being defeated by the -insert element- DS. But now Acnologia has taken it upon itself to "defeat" all the old DS before the Dragons make their return.