Prerequisite: Barbarian 12
Benefit: While raging, as a free action the barbarian may leave herself open to attack while preparing devastating counterattacks. Enemies gain a +4 bonus on attack and damage rolls against the barbarian until the beginning of her next turn, but every attack against the barbarian provokes an attack of opportunity from her, which is resolved prior to resolving each enemy attack.
Advanced Player’s Guide. Copyright 2010, Paizo Publishing, LLC; Author: Jason Bulmahn.