The Kirin Tor sent one other of Krasus's possessions with our expedition. It was his spellbook, called Krasus's Compendium. Containing all the spells he mastered, it lent us a much-needed advantage in the war.$B$BBefore Kael'thas and his forces laid siege to Kirin'Var, the compendium had been stolen from me by a rebellious apprentice intent on studying necromancy. The apprentice and his followers divided and studied the text in secret, locking themselves inside their houses in the southern part of town.