The black book being only about 150 pages in volume contained essential information about the guild and its way of doing things. It was more like a handbook to give the experts a tad bit above average explanation about the place, as even descriptions of places, items, and facilities were present.
Noah for one found the dueling description in that book quite interesting. According to the book, to engage in a duel, one would have to call out his name and the name of the person they wished to duel with. If the person they wished to duel with accepted, their crests would both glow a deep red shade forming a sort of a pact.
Later on, the duel's rules could be added, like no weapons, no empowerment, no spells, or the first to tap out and anything they wanted. This way if both individuals damaged themselves fatally there would be no repercussions.
