Greater Penetrating Strike

Combat

Your attacks penetrate the defenses of most foes.

Prerequisite: Penetrating Strike, Weapon Focus, 16th- level fighter.

Benefit: Your attacks made with weapons selected with Weapon Focus ignore up to 10 points of damage reduction. This amount is reduced to 5 points for damage reduction without a type (such as DR 10/—).

Source: Pathfinder Core Rulebook