Shield Master

You use shields not just for protection but also for offense. You gain the following benefits while you are wielding a shield:

• If you take the Attack action on your turn, you can use a bonus action to try to shove a creature within 5 feet of you using your shield.

• If you aren't incapacitated, you can add your shield's AC bonus to any Dexterity save made against a spell or other effect that affects only you.

• If you are subjected to an effect which allows you to make a Dexterity save for half damage, you can use your reaction to take no damage, interposing you shield between you and the effect.