a luggald fiend  

This mob conned yellow to my 51 mage. I had it pop after a luggald beast popped, which in turn popped after I killed the three luggald horrors in the room with the small lake in the NW corner of the zone. I don't know why the one time I got the beast and the fiend to pop when normally the three horrors don't cause anything to pop - in fact, they themselves don't seem to be normal timer mobs (that I can tell). Fiend dropped nothing (beast dropped an emerald). Both beast and fiend popped near the horror spawn points.