Shield Bash

You learn the Shield Bash maneuver.

After you have taken the attack action, you can use a bonus action to attack again with your shield. Make an attack roll against a chosen target. If the attack is successful, the target takes 1d8 + your strength modifier as bludgeoning damage and rolls a constitution saving throw against a DC equal to your strength score. On a failed save, the target is knocked prone.

You can use this feature a number of times equal to your proficiency bonus between long rests.