The Ulak is A Key for the upper levels of City of Mist. It drops off every Captain of the Guard In CoM and they are a very common spawn. I have also heard it is for an iksar SK quest.. but I'm not sure this is a fact. If its not, I'm not sure why they would make it drop in FoB.. In my opinion it looks like a sharp steel protractor..
Xixlix (formerly Dixoffalot)
Lvl 45 Warrior
Bertoxx