The Sire Impotent

It is unknown whether this ritual was developed as a punishment or as a warning to neonate Assamites. Regardless of its origin, this ritual renders a given Kindred's vitae inert for the purposes of siring new vampires. Using this ritual requires the caster to partake of the kalif blood, not merely inhale the smoke.

System
The player makes his roll, and the character ingests the blood of a vessel under the influence of kalif. The subject must either be a descendant of the sorcerer, or the sorcerer must have the fang or tongue of the subject. If the roll is successful, the subject is unable to sire childer for a year and a night, or until the Final Death of the sorcerer, whichever comes first. Potential childer drained of blood will simply die if the Kindred attempts to Embrace them.

Using this ritual destroys the fang or tongue once the ritual is complete. If the ritual fails, the fang or tongue is destroyed anyway.