Improved Martial Arts Feat
Improved Martial Arts
You are more skilled at unarmed attacks due to your improved training.
Prerequisite: Base Attack Bonus +4, Martial Arts
Benefit: A Medium-size character deals 2d4 damage with an unarmed strike. Strength modifiers apply. Also, you threaten a critical hit on a natural 19 or 20 when making an unarmed attack.
Small characters deal 2d3 points of damage and Large characters deal 2d6 points of damage with an unarmed strike and this feat.