Custom Blood Magic: Ritual

Learning the Mind Enslumbered allows a thamaturge to determine how an individual fell into torpor.  Based upon this initial premise a less detailed and more general informative ritual was developed.  The caster takes a silver coin, no smaller then a half dollar and soaks it in a mixture of one trait of blood from the ritual's target, crushed bone and ash.  Once completed, the coin absorbs the blood, dust and ash and the coin turns blood red in color.  For the next three nights the coin remains red while they target is alive (or as near as a Kindred can be), it turns white while their body is healthy, but their soul is elsewhere (Posession, Soul Steal, etc.), and turns black if they are in torpor or have met final death.  At sunrise on the third night, the coin disintegrates to dust.