Iron Fist Technique

You've learned to put the weight of your fists to your advantage, letting your momentum empower your strikes. You gain the following benefits:

•  Your unarmed strikes deal double damage to objects and structures.
• Before you make a melee attack with an unarmed strike using Strength, you can choose to take a -5 penalty to the attack roll. If the attack hits, you add +10 to the attack's damage. This feature cannot be used in conjunction with flurry of blows.