Nonnak, the master necromancer is found on the lower level of the Dwarven Graveyard, accompanied by a huge group of undead, as well as Griff Bloodax, the Undead chaos dwarven berserker. He is capable of casting cone of cold and summoning significant numbers of lesser undead. He also seems to regenerate about 2 health per turn and has a potent melee attack. He is also vulnerable to fire; fire based damage is believed to receive 4x multiplier.