Everything

Turquoise was believed by many ancient civilizations to be prophylactic in nature, protecting those that wore it. Perverting this belief, a Setite Sorcery can craft jewelry that actively does the reverse. The Sorcerer takes a large piece of turquoise and bathes it in a point of his blood for an entire lunar month. At the end of this period, the stone becomes red like jasper. He then cuts the stone in two, and incorporates each half into a separate piece of jewelry, inscribing the name of an intended target upon both stones. This can be any form of jewelry, not just rings as the name of the ritual suggests, although these tend to be the most commonly produced items. One piece is given to the intended target, while the other stays with the Sorcerer.

System

As long as both the Sorcerer and recipient are wearing the items of jewelry, when the intended target next partakes of an addictive substance (drugs, alcohol, Vitae, etc.), the Sorcerer becomes aware of it and has the choice of making them both become automatically addicted to the substance in question. The effects of the ritual fade after this first instance, whether the Sorcerer activates it or not. This provides a Setite Sorcerer an immense amount of leverage over a given target, by creating a new vice for her to exploit.