Antonius, an ancient Celestial Chorus mage, allied himself with some Garou, creatures otherwise known as werewolves, Lupines or lycanthropes. These Garou believed that the One was plagued by a force known as the Wyrm. The Wyrm was a source of great corruption and wished to bring about the end of the Realm. Antonius recognized the common nature of the Wyrm and his own Adversary and sought to detect the corruption the way the Garou did.

Seeking first for tainted spirits in the Umbra, he was unable to detect them as they were perceived by the Garou. Next, he tried searching for sources of great entropy. Linking his search in the Umbra with his search for chaos enabled him to identify the Garou-termed "Wyrm spirits."

This is a dangerous rote, one known to drive mages crazy; there is only so much that can be done in the face of eternal corruption.
[The first Spirit Sphere is used to pan through the Umbra while the first Sphere of Entropy is used to focus on random fluctuations of decomposition. There is usually a low-level underlying current of Entropy and an increased level of Pattern corruption in Wyrm creatures that can be detected with careful analysis of one's perceptions. This allows the mage to understand the difference between an "evil" spirit and a Wyrm-fettered one.]

Joshua sorted out the particulars of this Rote almost intuitively, despite it being the usual province of the Celestial Chorus. In fact, the reason why he "learned" this Rote is beyond him - most likely the idea of his Avatar. It can come in handy, though. Often adapted for uses on Earth more than in the Umbra, with some simple tweaking it can be directed to pick out a "tainted" vampire, a Bane-possessed Fomor or a Black Spiral Dancer. Of course, Joshua needs some reason to resort to such magicks, but his suspicions are easily aroused, especially in this dark city where the serpent is rarely subtle.