Tied to the cycle of day and night, a circadian rhythm is the natural internal process that regulates the sleep-wake cycle of all living creatures, down to the smallest bacteria. Even unliving vampires are supernaturally compelled to sleep during the day, and when disturbed or forced awake, they are sluggish to act. By disrupting the circadian rhythm of a creature, you limit her ability to concentrate and perform to the best of her ability.

Spend 1 point of Blood and a simple action to activate Circadian Disruption. You immediately emanate a noticeable aura of lethargy. For the next 10 minutes, whenever you succeed in an offensive challenge using your Mental or Social attribute, any targets you succeed against also become Disrupted in addition to the power’s standard effects. While Disrupted, a character experiences momentary lethargy. This limits her skills to a maximum of 3 for the purposes of forming offensive and defensive test pools. A character remains Disrupted until the end of her next action. Multiple applications of this effect are not cumulative.

While Disrupted, characters with the Light Sleeper merit have their skills limited to 4 instead of 3. Creatures who do not sleep, such as zombies, are immune to this power.