Nurglitch carries the Grim Ague, a horrible disease that permeates even the air that he breathes. Any non-Clan Pestilens or non-Bubonic Court unit with a model within 6" of Nurglitch is at -1 WS. Furthermore, any such model in base contact with Nurglitch at the end of any turn automatically takes a Strength 4 hit with no Armour Saves allowed. The Grim Ague does not affect Red Crested Skinks.