Crack of the Whip (3.5e Maneuver)

You know the true way of the whip: where lashes can leave lasting damage, how to handle armored opponents, how to move a whip quickly and strike suddenly, and most of all how to use a whip in every situation.

While in this stance, any Whip that you use may be used for attacks of opportunity and does not provoke attacks of opportunity itself. You may choose to deal either lethal or non-lethal damage with a whip, at no penalty. Finally, enemies are immune to your whip attacks only if the sum of their Armor and Natural Armor bonuses are greater than your Initiator Level.