Uzin's Ultraviolet Blade

You brandish the weapon used in the spell’s casting, embiggening it with ultraviolet energy and you make a melee attack with the weapon against one creature within 5 feet of you. On a hit, the target suffers the weapon attack, and takes additional force damage equal to your spellcasting ability modifier.

This spell’s damage increases at certain levels. At 5th level, the melee attack deals an extra 1d8 force damage to the target on a hit. It increases to 2d8 at 11th level and 3d8 of force damage at 17th level.

True Pacifist When you bring a creature down to zero hit points they are rendered unconscious instead of dead.