Rift Mob:Drone Bennkaa  

Drone Bennkaa is a rare (level 60 elite) mob located at 3617, 3017. Note that this is underground, inside the complex of Hive Kaaz'gfuu, and that the area is swarming with level 62 elites. (At level 65 with 684 hit, I was able to solo it without issue.) There are multiple spawn locations, so keep an eye out.