Gnosis is the term used to define the strength or weakness of a spirit's link between the Umbra and the Realm. As fundamentally spiritual creatures, Garou possess Gnosis, as do other shapechangers.

It is represented in game terms as a statistic on a player's character sheet. At character creation, lupus garou possess higher Gnosis than metis who in turn have more than homid; this represents the stronger link that lupus have with the spiritual aspect of life.

Many game mechanics, such as Gifts, may require the use or expenditure of Gnosis, and garou must take care not to run out at a crucial moment.

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