Soke of Storms  

I went to the room. cleared trash. waited. cleared trash waited more. cleared trash.. waited even more. waited almost 2 hours. camped. came back later. cleared trash waited 15 minutes. gave up. Camped. ran another toon down there. cleared trash. sat down and 5 minutes later he popped. No idea on spawn mechanism or requirements. both toons were at that point on tasks. I actually had 2 other toons at same spot. using the same soke of storms, I got all 4 toons done. Hays up long enough for me to swap toons 3 times and run there - luckily my guild mates hung out the 30 minutes.