Many believed that the war that sacked Blood Vile was caused by a tension between factions. the is but a lie. The War that hit Blood Vile was lead by 2 groups. The Royals, and the Darkspawn. They allied with eachother in order to destroy the Wardens. The Royals planed on taking back control of the city and continuing its use as a training and recruiting base. The Darkspawn just wanted the Wardens gone.