Executing Smite

The next time you hit a creature with a weapon attack before this spell ends, the weapon pulses with crimson vengeance. When you hit a target, that target must make a Wisdom saving throw of 17. On a failed save, if the target has 50 HP or less, the target is dealt 3d10 fire damage; if the target has 30 HP or less, it is instantly killed. On a successful save, targets take half damage (except in the instance where the target is killed instantly when at 30 HP or less).