You have learned the way to combine your shield to any offensive capabilities in combat. All the time spend in training and in combat finally pay off. The weapon you wield in one hand will strike harder and harsher than ever before. You gain the following benefits:
- When an attack misses you by 5 or more, you can use your reaction to make an attack of opportunity to the attacking creature. Provided that you are wielding a shield in one hand.
- Before you make a melee attack with a one-handed martial weapon you are proficient with, and wield a shield in the other hand, you can take a -5 penalty to the attack roll. If the attack hits, you add +10 to the attack's damage.