Source: Dragon #340
You react to any drop in your opponents' guard with lightning speed.
Prerequisite: Dex 13, Combat Reflexes, base attack bonus +6.
Benefit: For any given opportunity in melee combat, you can make two attacks of opportunity. The second attack is at a -5 penalty, just like your second normal attack in any given round. You still cannot exceed your normal maximum number of attacks of opportunity in a round.