Pit Fighter

Accustomed to rough-and-tumble fighting using whatever weapons happen to be at hand, you gain the following benefits:

• Increase your Strength or Constitution score by 1, to a maximum of 20.
• You are proficient with improvised weapons.
• 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 make one Unarmed Strike.
• While you are not wearing any armor, your Armor Class equals 10 + your Dexterity modifier + your Constitution modifier.