Hand to Hand Master

Accustomed to fighting using whatever weapons happen to be at hand, you have developed a unique fighting style, made up of flowing movements and many quick strikes. You gain the following benefits:

• Increase your Dexterity or Constitution score by 1, to a maximum of 20.
• When you attack with an unarmed strike or an improvised weapon, you can choose to use your Strength or Dexterity modifier.
• 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 grapple the target.