I just wanted to ask about how exactly do these guys (Vengeful Shades) work. Are they spawning at random points, or on random people. Are they targeting random people or is there some correlation between who they are spawning next to and who they target.
To me their spawning and targeting does seem random, but i would like the verify this by asking people who have had this boss (Heroic 25man Lady Deathwhisper) on farm for a while.

