RITE OF SILENCE: (Level 1)
Garou who need to be silent use this rite to make up for any lack in natural ability. For the duration of this rite, the Garou are incapable of making any noise even if they bang on a drum or shatter glass. With the assistance of Raven-spirits, the Garou can sneak through dry underbrush or over a gravel road without making a sound. The Garou invoking this rite confines herself to a dark room or cave, whispers her darkest secret and then utters an oath of silence. Raven-spirits, attracted by her secret, carry any sound she makes into the Umbra once she leaves her confinement. If the werewolf chooses to speak for any reason, the rite ends immediately. The Raven-spirits, disappointed that the Garou did not reveal any more secrets, return the sounds they carried. For several minutes, the Garou is surrounded by a caophony she created earlier. This rite only silences those sounds the Garou would have made directly.
(Source: Werewolf Player's Guide, 2nd Ed)