Enter the Dark UmbraEdit
Only a Death's Breath-spirit may teach this rite, and only Silent Striders and members of the Ivory Priesthood may practice it. To perform the rite, the priest must purge himself of all sins and Harano. (This usually requires a day of fasting and meditation.) During the day of purification the Garou must also contemplate the thought of dying.
The player spends a Gnosis point and makes a Willpower roll (difficulty 7) or the character risks plunging into a deep death-obsessed Harano for the rest of the scene. If the roll is successful, the Garou sees a Death's Breath-spirit around twilight and must let it breathe into his mouth. The Garou may now enter the Dark Umbra (also known as the Shadowlands; see Wraith: The Oblivion) and appears as a dark patch in the penumbra. The Garou may stay there until the next morning.
Source: Silver Fang Sourcebook