Unconventional Fighter

You adopt an unusual fighting style and gain the following benefits:

• Increase your Dexterity score by 1, to a maximum of 20.
• You are proficient with improvised weapons.
• Being prone doesn't give you disadvantage on melee attack rolls and standing up uses only 5 feet of your movement.
• When you hit a creature that is no larger than you with an unarmed strike or an improvised weapon while prone on your turn, you can immediately use a bonus action to have it make a Dexterity saving throw (DC 8 + your proficiency bonus + your Dexterity modifier). On a failed save, it gets knocked prone.