Greatshield Master

You learn how to use greatshields with agility and strength:
• If you take the Attack action on your turn, you can use your
bonus action to shove a creature within reach with your
shield.
• You can add your shield’s AC bonus to Dexterity saves, by
interposing your shield between the effect and yourself.
• If subjected to an Dexterity save to reduce damage from an
effect, you can use your reaction to take half damage on a
failure and no damage on a success.