Avnos Des was the head of the spirits that protected the Abbey of the Rose in Sembia.
Avnos Des was once a human living in Elgrin Fau in the Plane of Shadow until Kesson Rel killed all the inhabitants. He became a spirit.
When Erevis Cale's party destroyed Kesson Rel, in gratitude Avnos and his fellows agreed to protect the Abbey of the Rose.
In 1484 DR, the Oracle released Avnos and his fellows from their service and they went to serve Drasek Riven.