Took this guy down after a couple of aborted attempts. Group was 76 mage with Spire Servant air pet, 71 druid and 2 J1 healer mercs. Both healers on reactive, engaged with 75 RS pet, druid debuffed and then burnt him down with both casters. A little close for comfort but doable. Drops 6 items for quest. Didn't time respawn but recall him being up again within an hour or 2 at most.
This mob /cons as 75 but is a GROSS undercon, probably one of the worst I've ever seen. He's MUCH tougher than his guards who /con yellow to a 75.
He can be snared, rooted, slowed and crippled. That's the good news. The BAD news is that even snared, rooted, slowed and crippled he's an ***-kicker. Flurries constantly, quads for 2500 a shot and has a max hit around 3500. Yes, he also summons. Plus he WILL split into your coffee when you're not looking!
The yellow guards make for great xp if you can split 'em but if you decide to try your hand at this named, naively thinking he'll be easier than his guards since he /cons lower level.... DREAM ON, MACDUFF!