Abel took out the book that Hoover wrote. It was meant to be a recollection of his journey towards becoming a knight's head commander. Since only a handful could be the very best, he needed a lot of guidance was needed.
For a knight's commander to become a head commander, there were a lot of obstacles that must be overcome. First up, Abel must learn to combine his combat qi with a specific type of energy. More specifically, by combining his physical attacks with a specific type of, say, an element, his regular attacks would be much stronger than before.
It's much harder than it sounded, though. While the knights could learn such techniques from the scrolls they found, they never found out how to control their own mana to perform these moves.
