Great Cleave

The character can strike many adjacent foes with a single blow.
Prerequisites: Strength 13, Power Attack, Cleave, base attack bonus +4.
Benefit: As a 2-act action, a character can make a single attack at his full base attack bonus against a foe within reach. If he hits, he deals damage normally and can make an additional attack (using his full base attack bonus) against a foe that is adjacent to the previous foe and also within reach. If he hits, he can continue to make attacks against foes adjacent to the previous foe, so long as they are within the character’s reach. The character cannot attack an individual more than once during this attack action. When the character uses this feat, he takes a -2 penalty to his Defence until the beginning of his next turn.