Duel Wielding Mastery

You master fighting with two weapons to the point that the sword seem to be extensions of your arms, gaining the following benefits:

• You gain a +1 to Dexterity
• You gain an additional +1 bonus to AC while you are wielding a separate melee weapon in each hand.
• When you take the attack action with a weapon in your offhand you can make one extra attack with that offhand weapon. This replaces your bonus action attack with your offhand weapon