Van Richten's Guide to Ravenloft
Cost: 25 gold.
Power (Consumable ✦ Zone): Standard Action. Make an attack: Close burst 1; targets wolves, werewolves, and wolfweres only; +5 vs. Fortitude; the burst creates a zone, and targets that are hit slide to the closest square outside the zone. The zone lasts until the end of the encounter, and affected creatures that move into an affected square or begin their turn in an affected square must make a save: if successful they grant combat advantage and suffer a -2 penalty to attack rolls while in the zone, if not they grant combat advantage, are weakened, and suffer a -4 penalty to attack rolls while in the zone.