Vengeful Smite

The next time you hit a creature with a melee weapon attack during this spell’s duration, your weapon marks them with baleful energy, connecting them to you. The attack deals an extra 2d6 necrotic damage to the target. Until the end of the spell's duration, whenever the target of the spell damages you while it is within 30 feet of you, you may use your reaction to force that creature to make a Dexterity saving throw. It takes 1d6 Necrotic damage on a failed save, or half as much damage on a successful one. The spell ends if you use your reaction to do anything else. The spell also ends if the target is ever outside the spell’s range