Bonebreakers

These unremarkable brass knuckles appear well used if not well loved. They are covered in dings and scratches accompanied by the odd stain. You gain a +3 bonus to attack rolls and damage rolls made with this magic weapon. When you hit a creature with this weapon, you can attempt to maim them. When you do so, the creature must succeed on a DC 19 Constitution saving throw or be maimed in one of the following ways of your choice. The creature remains maimed until it is targeted by a Greater Restoration spell or similar magic. Once this property is used, it can't be used again until the next dawn.

Broken Arm. The creature has Disadvantage on attack rolls with weapons and Unarmed Strikes.

Broken Leg. The creature's Speed is halved.

Broken Ribs. The creature has Disadvantage on Strength and Dexterity ability checks and saving throws.

Broken Skull. The creature has Disadvantage on Intelligence and Wisdom ability checks and saving throws.

Push (Mastery): If you hit a creature with this weapon, you can push the creature up to 10 feet straight away from yourself if it is Large or smaller.

Light: A light weapon is small and easy to handle, making it ideal for use when fighting with two weapons.

Proficiency: simple, brass knuckles Source: Ben Huffman - Pugilist (Third Party)