Gain a +1 bonus to attack and damage with unarmed strikes, and you can choose for your unarmed strikes to deal Necrotic damage. Once per turn, when you hit a creature you can add a wound to the creature. At the start of a wounded creatures turn, it takes 1d4 necrotic damage per wound, and makes a DC 15 Constitution saving throw, ending the effect of all wounds on a success. Hit points lost to this weapon can only be regained through a short or long rest.