Umbral Tracking (Rank 3)Edit
As noted in Umbral Tether, usually only the Garou who created an Umbral tether can see it. If a Theurge has this Gift, that is no longer true. This Gift is taught by a fly-spirit.
By spending one point of Gnosis, the Garou can see all active Umbral tethers around her. She does not know to whom the tethers belong, but can tell in which direction it extends to the Garou. If the Garou attempts to break the tether, the tether's creator knows immediately and may make a resisted Strength + Occult roll at difficulty 6 against the Garou. If the attacker gains more successes, the tether is destroyed.
Source: Player's Guide to Garou