Knowing Stone
Description: By use of his own blood and the proper rituals, a houngan can mark a person's spirit, allowing the vampire to see where his subject is at any time, even after he has died. In this fashion many of the spirit-haunted vampires keep tabs on their close kin and their enemies.
System: The player rolls Intelligence + Rituals at a difficulty of five (5) or four (4) if an in clan caster or prodigy. The houngan bleeds herself, then uses the vitae to paint the name of the target on a consecrated stone. If the ritual is successful, she can afterward learn the target's current whereabouts by dancing around the stone in trance state until the Baron or one of his petro loas whispers the desired information into her ear. The stone loses its powers on the night of All Saints Day unless the houngan spends a blood point.
Note: Bruce has created a variant of this ritual called 'Blood of Cerberus' in the Greco-Roman style, it is a level one ritual, found in his Grimoire.
Reference: Blood Magic: Secrets of Thaumaturgy - Voudoun Necromancy - Page 111.