Revised Protection

You have trained to use shields not only to defend yourself and others, but also as a means of offence. You gain the following benefits while you are wielding a shield:

• Shield Bash: If you take the Attack action on your turn, you can use a bonus action to ram a creature within 5 feet of you with your shield. On a hit the creature takes 1d4 bludgeoning damage and is pushed 5 feet back. You can use this bonus action a number of times equal to your proficiency bonus, you regain all expended uses on a short or long rest.