Shadow Twin
The vampire's control over darkness has progressed to such a degree that he may bestow it with a limited degree of sentience. By animating his own shadow or that of another, the Lasombra can actually "set free" the shadow cast by light. While this power is active, the subject casts no shadow, as it has left to pursue the Lasombra's commands.
Needless to say, this power unnerves mortals and even a few inexperienced vampires. The Lasombra commands the individual's shadow, and some vampires report having seen mortals literally scared to death, as their shadows leapt away to taunt or menace them.
System: The player spends a blood point and makes a Willpower roll (difficulty 8). If the roll succeeds, the shadow springs to unholy freedom for one hour per success on the roll (though it disappears at sunrise regardless of how many success the Lasombra had). The Shadow Twin has Attribute and Ability ratings equal to half those of its parent body; they won't do much talking or thinking, so Mental and Social Traits don't matter much, though Wits may come into play. Additionally, the Shadow Twin has an Obtenebration score equal to one-half of that of the Lasombra who animated it (round down).
The twin may separate itself from the parent and travel up to 50 feet away, crawling through crevices or sliding up walls. It may attack and be attacked, though it takes and does only half-damage (again, round down); flame and supernatural attacks (werewolf claws, vampire fangs, magical spells, etc.) do full damage, however. If the Shadow Twin is killed, its parent loses half her Willpower pool and must roll to avoid Rotschreck (difficulty 9).
