Sigil of Rage – A magical sigil written in the Primal Tongue has been carved deep into your flesh, causing it to pulse with an unfathomable torrent of energy. When activated, Primal Rage suffuses your body, granting you +10 to Strength and Agility. While this ability is active, you are consumed by pure rage as your body is burned from within, dealing 10 points of damage per second. This ability scales per level.
