Quad Weapon Fighting

You can take this feat if you are a Thri-Kreen or Homarid

When having this feat, you can wield four weapons at once, or dual wield two handed weapons. When you attack with dual wielding light weapons, you can add your positive bonus to the damage of the bonus attack. When you attack with quad wielding light weapons, you only add your positive bonus to the first two attacks. You add a negative bonus to any attack, even if you would not add the positive bonus. You can only quad weapon fight with light weapons. After taking this feat, you can dual wield weapons without the light property, even weapons that have the two handed property.