I pulled all the mobs around him and killed them first, they are all mostly slowable and some are fully slowable. This mob hits awefully fast and is only partially slowed, much more powerful than mobs around him. Boxed with Shaman 15k mana, and Warrior 17k hp and 2600 ac buffed. Dropped the ac aug, very happy.
As you zone in to KT from Natimbi, go down and take first right to Summoner Ring. Hug the right wall around to the "North Animals" camp. It's a wide open field with the NoN-KoS mobs roaming around. If you sit with the zone wall to your back you will be looking at that Big Pyramid in the middle of your screen.
The Summoner Right to your left
A Pillared "temple" along the zone wall to your right gaurded by 2 stone golems and a ixxt horseguy that wanders up and down the ramp.
That's your camp. Pull there. You'll clear the 2 stone guys and the wandering ixxt. And lo and behold, standing on top of that ramp is a kyv----he's the PH for Hexxt Markmaker. Reportedly can also spawn Hexxt Deathaim.
I've had a yellow con version of this mob, so it was 66 / 67, was no easier to kill than the red cons tho lol. Some mobs are immune to all stuns, perhaps this guys level is 66-68 but immune to stuns, fight was so frantic I cannot remember whether divine stun landed or not.