a medallion with a whorl-shape pattern that can channel the power of the Medium without becoming a maston. It is a way of forcing the Medium to obey. They can be used to alter or inculcate feelings in another person. Courage can be withered. Lust provoked. When using the power of a kystrel, the user’s eyes begin to glow silver. A shadowstain then forms on the breastbone beneath the medallion and continues to spread with use.