Thrown weapon master

You have mastered thrown weapons. You gain the following benefits:

• Your thrown weapon attacks ignore half cover and three-quarters cover.
• Before you make a thrown attack with a weapon that you are proficient with, you can choose to take a -5 penalty to the attack roll. If the attack hits, you add +10 to the attack's damage.
• You can make a thrown weapon attack with any non heavy melee weapon.
• Increase your dexterity score by 1 to maximum of 20