Was scouting for a pull spot to kill Hill Giants and I got agro on a bear and had to kill it. A short time later I was checking out spot on hill near Orumot Uluntar and Nanertak popped right on top of me.
I was able to solo him and he dropped, I'm pretty sure Warbound Armguards. Unfortunately, I sold them in Bazaar for 15k (on Povar) without really thinking about it so I don't have stats but I think the AC was 25 and they had a +1 Mana Regen on them, in addition to other stats.
Going to go back and farm that one!