Demon Physiology (DTF)

Innate Powers
Demon characters have a set of rather subtle innate powers that they can use without revealing their true nature to onlookers:
 * Immunity to illusion. Demons have a high chance of seeing through any sensual deception.
 * Immunity to mind-control. Demonic minds cannot be controlled by other supernatural creatures or demons (with a few exceptions). Additionally, demons are immune to supernaturally induced fear.
 * Immunity to disease. Demons will never fall ill. If this power fails temporarily, the demon is instantly cured when the power resumes.
 * Immunity to aging. Demons don't age. Even if this power fails temporarily, they don't "catch up" with their chronological age.
 * Resistance to toxins. Demons are highly resistant to toxins. Additionally, many types of injury that would leave permanent damage heals normally (e.g. burns).
 * Awareness. Demons can sense the supernatural 'feel' of a place or person, and can sense the use of supernatural abilities within a radius of several miles if they are either actively looking for it or the ability is particularly powerful.
 * Invocation. Demons may always speak to each other, regardless of distance, as long as they know each others' Celestial Name or True Name.
 * Healing. Demons can use Faith to heal their injuries.

All these abilities will stop working if the demon runs out of Faith. As soon as the demon recovers at least one point of Faith, the powers resume.