Shield Sibling
Shield Siblings are trained to fight strategically with their shields, excelling in difficult terrain and confined spaces. They are capable skirmishers and know how to take advantage of close quarters, given the right equipment.
Level 3: Shield Tactics
You can shove an opponent as a bonus action while you wield a shield. You have advantage on these shove attempts. Alternatively, you can spend a bonus action to increase your AC by 1 until the start of your next turn as long as you wield a shield.
Level 7: Close Quarters Combat
When you successfully shove a target with your shield, you can instead choose to hook them with your shield to switch positions with them without provoking opportunity attacks. You then gain advantage to attack the creature you swapped with until the end of your turn.
Level 10: Pack Striker
When you are using a shield, you have advantage on melee attack rolls against targets if there is an ally within 5 feet of the target.