Aura, also known as glow, is a luminous field of energy surrounding clairvoyants. Aura is the link to the æther and is unique to each individual clairvoyant. Clairvoyants are identified as such by their colored aura.
Aura is understood to be a biological phenomenon. Aura does not manifest in any one way. It can be bright or dim, fast-moving or slow, small or large. It is created by color shining through an individual's dreamscape and is visible only to those who are sighted but can also be sensed by voyants like Paige Mahoney who have a heightened sixth sense. A voyant's aura can be observed to discover which type of connection to the æther they have, but some auras look very similar, like an oracle's and a dreamwalker's. A person's dreamscape tends to have the same dominant color as their aura. The Golden Baroness, the first Underqueen of SciLo, noted in early 1980 that clairvoyants with auras of the same color tend to share gifts with similar qualities. Paige describes human auras a giving off a soft, warm signal and Rephaim auras as cold. The Rephaim feed on aura. Doing so can cause the voyant to bleed from their eyes. This is why Rephs force only voyants to fight the Emim and be their slaves, not amaurotics. Without an aura, voyants go into spirit shock and end up dead or insane.
In Latin and Ancient Greek, aura means wind, breeze or breath. It was used in Middle English to mean "gentle breeze."