With the power of this ritual, a vampire may temporarily interrupt the reanimating effect of vampiric Vitae, rendering a Kindred immobile as the stiffening of muscles common to dead bodies takes hold. The number of successes garnered on the Crúac roll determines the number of dice by which the victim’s next Physical dice pool is penalized. This applies only to dice pools for actions, and does not affect Physical resistances. Rigor Mortis is useless against mortals, ghouls, Lupines and mages, since they don’t depend on the power of vampiric Vitae to animate their bodies.
The roll to activate this power is penalized by the subject’s Composure.