Brutal Pugilist

You are an expert at hand-to-hand combat, which grants you the following benefits:

• Your unarmed strike gains the versatile property, allowing you to increase its damage die by 1 size if you have both hands free when you make the attack (d4, d6, d8, d10, d12).
• Your unarmed strike attack rolls do not have disadvantage while you are restrained.
• When you use the Attack action to grapple or pin and succeed, you also deal your unarmed strike damage to the creature you are grappling.
• You count as one size larger when a creature tries to swallow you. If it does, you can use your reaction to make an opportunity attack against it.