Troll's Bridge (Rank 4)Edit
The Garou can set up a temporary fortress. Despite the name, it does not have to be near a bridge. It does have to be in a relatively enclosed area, such as in a gully or a thick grove of trees.
The player spends one point of Gnosis and rolls Wits + Repair (difficulty 6). The number of successes + 5 is the Defensive Factor of the lair: the amount of Strength an intruder must possess to break through the magical barrier as per the Feats of Strength chart in 3rd ed WWtA Corebook, p. 197). Enemies cannot gang up to assail the barrier: they must each attack individually. Each intruder who breaks through will lower the Defensive Factor by one. The effect lasts for a number of hours equal to the Defensive Factor.
Source: 1st ed Werewolf Player's Guide