You have extensively mastered a type of weapon, gaining the following benefits:

• Increase your Strength, Constitution or Dexterity score by 1, to a maximum of 20.
• Choose a weapon type to master (You gain proficiency with it). Once per turn when you hit with this weapon type it deals additional damage based on your character level.
  When you gain a level (or down time) you may choose a different weapon type to master.
  *(Feat Does Not Work With Brute Subclass!)