She used one of the three Fairy Tail exclusive spells which can only be used by someone with the Fairy Tail Guild Mark.Could be.
She knew how to "stop" the time for all Fairy Tail members. She can still be around even now, so she is extremely old so to say.
FAIL!!!!OfficialRikudouSennin said:Da fuq did I just read :dafuq:
Most great and flawless theories read between the lines to the fullest extent , (not saying mine is flawless , but there are some which are over a thousand words long which are , and i used the same methods they did...)I kinda meant to say that you might be reading a bit too much between the lines. A connection with Mavis and Zeref though makes things interesting.
BINGO!!! Forgot about that ; I am certain Zeref is Natsu's father or uncle or something like that.zeref also almost cried when he thought natsu died…..link:You must be registered for see links
The age is to back up that i say the only living dragons time travalled in order to bring up dragon slayers capable of killing AcnologiaHmm I think I understand your theory and especially the zeref-natsu relation could be, zeref's behavior IS strange indeed.
I still don't get what you wanted to say with the age of the dragon...does it matte for your theory? (then I didn't read careful enough).