Grapple Brawler

You’ve developed the skills necessary to hold your own in close-quarters grappling. You gain the following benefits:

• Increase your Strength or Constitution score by 1, to a maximum of 20.
• When you hit a creature with an unarmed strike or an improvised weapon on your turn, you can use a bonus action to attempt to grapple the target.
• You can use your action to try to pin a creature grappled by you. To do so, make another grapple check. If you succeed, you and the creature are both restrained until the grapple ends.