The Garou prepares a small, herbal sacrifice that she burns on a rise or mound, as an offering to the spirits nearby. She then engages in meditation. After a while her spirit passes into the Umbra, where the spirits, if pleased with the sacrifice, offers her visions of possible futures. It is not uncommon to experience memories of the past as well, and the two can occasionally be hard to tell apart.
Some werewolves, especially among the Silent Striders, the Children of Gaia and the Warders of Men, imbibe narcotic substances such as hashish or belladonna in order to encourage these visions. The player rolls Gnosis (difficulty 7), and the spirit of the character leaves her body for the Umbra. Should the physical form be disturbed, the Garou immediately returns to her body and the visions end.