To all units,
Beware of a man named Coman. He has developed an unhealthy interest in the boyaress's blood. Keep an eye on him. Should he continue disturbing recruitment efforts, take him in for draining.
Mircea
Captain of the Blood Guard
Beware: Coman
Military document.
The quest it belongs to
Where to get it
From the game's own loot tables and the inventories its characters carry. A percentage is the highest spawn chance recorded for this item; a row without one always carries it.