Mirror of the Gods
The Nahualli utters a prayer to Tezcatlipoca and smears a mixture of his own blood (one point) and the blood of a sacrificial animal (anything the size of a cat suffices) across the surface of a mirror. The blood fades as it is smeared. For a number of hours equal to the caster's successes on his casting roll, the reflection of any person or item currently under the effects of a path or ritual (from any variety of blood magic, be it Thaumaturgy, Necromancy or others) glows softly when viewed in the mirror. If the mirror is made of obsidian, the ritual lasts an additional hour.
