User blog comment:Lex wa Kaiho/What is Lumen Histoire?/@comment-71.114.93.83-20141111102111

I have three theories:

1) It involves time-travel. Which frankly would not be a surprise because Mashima certainly does like it! I'm here hoping he's a lot more creative, especially considering Makarov stated he'd need the guild's memories erased.

2) I have a hunch that, considering the bulk of the series' tussles, the magic will be based around "a wish". Someone makes a wish and poof! the magic is so damn powerful that it's able to fulfill it, much like a fairy might in terms of magic, but with a price or unforeseen consequence. This opens up a lot of possibilities: perhaps someone before wished the Dragons away. Perhaps this is why Layla's dead. Who knows!

3) Mavis is E.N.D. So long as that book isn't opened, she remains an extremely powerful force that Fairy Tail can use.