General Kaal has slain many foes, and in a bag at his side, he holds the skulls of those he considers his most precious kills. Not all of them, of course, have skulls -- it is a bag of eclectic contents.
Contained within, we have heard, is the head of one of our kind. We do not know to whom it might belong, for we do not often find ourselves running afoul of the venthyr.
Such a strange mystery must be solved. I will, of course, provide great compensation.