You have practiced extensively with a variety of weapons, gaining the following benefits:

• Increase your Strength or Dexterity by 1, to a maximum of 20.
• You gain proficiency with four weapons of your choice. Each one must be a simple or a martial weapon.
• Before you make an attack with one of the weapons that you are proficient with via this feat, you can choose to take a penalty to the attack roll up to your proficiency modifier. If the attack hits, you add damage to the attack equal to double what you reduced the attack roll by (prof. mod. x2). (doesn't stack with Great Weapon Master or Sharpshooter)