Dual Weapon Mastery III

You can wield two weapons or a double weapon without penalty.

• Prerequisite: Dexterity 17, base attack bonus + 11, Dual Weapon Mastery I, Dual Weapon Mastery II.
• Source: Core

When you wield two weapons or attack with both ends of a double weapon as a part of a full attack action, you take no penalty on your attack rolls. You only gain this benefit if you are wielding a weapon with which you are proficient.

Normal

If you use a full attack action to make more than one attack on your turn (see Full Attack). you take a -10 penalty on all attack rolls for the round.