I boxed em tonight .. (Warr, nec, shm, dru + 2 heal mercs)
NO spell land on him .. no slow, no malo, no dot or dd ... so i meele him down with warr and nec pet. Druid and Shaman need to chain heal .. was pretty close fight.
drops the shoulder's and the second kill the shield ...
On other namers group was doing an average of 8.5k dps. On this guy, average dps was about 4.5k. The biggest drop in dps was from lowered caster dps. Same amount of HP as other namers but fight took almost twice as long.
As an example, other namer and trash were being hit for up to 21k (non-crit) from one cast. When fighting this guy, 14k was the highest non-crit spell hit, so roughly a 33% mitigation.
He also emotes a few things (not sure yet what they are for):
"The Scavenger Subjugator appears to weaken a bit." "The Scavenger Subjugator stabs a spiked appendage through its target." "The Scavenger Subjugator surges with adrenaline!"
He also can hit hard for around 14k (I think only during his power-up emote).