Blood Potency describes the degree of power vampiric Vitae bestows upon a character. Vampire characters begin their Requiem at Blood Potency 1, and may increase it through age, experience and diablerie.
As Blood Potency increases, so does the relative difficulty of a vampire’s Requiem. Namely, her feeding becomes more difficult. At the Embrace, she can feed from anything with blood, including animals. Once she reaches the third dot of Blood Potency, animals no longer sustain her. At six dots of Blood Potency, she can only gain nourishment from the blood of the unnatural, usually meaning other vampires. It also makes rising in the evening more difficult.
For every twenty-five years a vampire spends in torpor, she loses a dot of Blood Potency. Many elders fall into voluntary slumber in order to ease their feeding restrictions.