User blog comment:Purehito/What is your favourite magic and what magic would you like to see in the next FT arc?/@comment-86.70.179.113-20130627075046/@comment-7418318-20130627085955

If Hades is mistaken about the very nature of the "one magic" why do you assume he's right about the kind of power one could get from it?

Hades seemed to take quite a lot for granted or work off of assumptions. Just look at how absolutely sure he was about Zeref's powers being sealed up and the keys being necessary to awaken it.