Aura

Information 
Creates a glowing halo, or “aura,” around the subject. This aura gives the caster a general insight into the subject’s personality – the better the skill roll, the better the insight. The aura also shows whether the subject has Magery, Magic Resistance, or Magic Susceptibility (and what level); whether the subject is possessed or controlled in any way; and whether the subject is in the grip of any violent emotion. A critical success will detect “secret” traits, such as lycanthropy, vampirism, and unnatural longevity. 
All living beings have auras; inanimate things do not. A zombie is detectable by his faint, death-haunted aura, while a vampire retains the aura he had in life. Illusions and created beings have no  aura, so a successful casting of this spell distinguishes them from real persons.

Cost: 3 (for any size subject). 
Prerequisite: Detect Magic.

Item 
Staff, wand, or jewelry. Usable only by mages.  
Energy cost to create: 100.