I made the very large mistake of touching a phylactery that I found in the area know as the Umbral Vestige. The contents of said phylactery is a very angry necromancer who seems to be able to speak to me directly into my mind. He wishes me to punish the shissar in Umbral plains for his death and only when he is satisfied will he be quiet. It appears I have no choice other than to battle these terrifying beings.