Allevar is a highly deadly poison normally used by assassins who have sustained contact with their victims. Slowly building up in the victims over time, allevar does not cause any outward effects until the poison reaches a critical mass, at which point the victim is quite often killed. A total of ten doses of allevar administered over the course of a month are necessary to induce poisoning in the subject. Each time the subject consumes food tainted with allevar, he must make a Fortitude save (DC 20) or the poison remains within his system. After ten failed saves over a 30 day period, the poison takes effect. 4d4 hours after the tenth dose, the victim sustains 4d6 points of temporary Constitution damage, which proves fatal if this drops his Constitution to 0 or lower.