Rules: To use daggers and fencing weapons to parry chain weapons, polearms, two-handed impact weapons, and two handed swords, you need this special ability. You must also wield one such weapon in each hand. When parrying in this fashion, take no penalty for using your off hand.
Prerequisites: AGI 13
Combat Techniques: Daggers, Fencing Weapons
AP Value: 10 adventure points
Publication: Core Rules page 247