Combat Shield Expert

You've learnt how to wield a shield in combat offensively. You gain the following benefits:

• Increase your Constitution or Strength score by 1, to a maximum of 20.
• You can use a shield and still have a hand free you only get +1AC from the shield when used this way.
• You can use the shield to attack as a bonus action as 1d4 bludgeoning damage strength is the modifier for this attack, you can only use this attack when wielding the shield as normal (+2AC)