Zhurpukh of the Deeps  

Zhurpakh is on the very eastern shore of the Midgewater Marsh. It's easy to get to him. Go through the marsh instead of the Weather Hills. Go on the road east of bree, and stop when you get to the housing broker. Then go north into the swamp then east to it's edge. Zhur's actual max morale is 720, and he has the ability to heal almost half of his health, so try to interrupt him when he casts.