Voltaic Bolt

You charge a piece of ammunition, such as an arrow or a crossbow bolt, with electrical energy. If you hit a creature with this ammunition, the target suffers the weapon attack's normal effects and takes an additional 3d6 lightning damage. The spell fades at the end of the attack or if the ammunition is not used after one minute.

At Higher Levels. When you cast this spell using a spell slot of 3rd level or higher, the damage increases by 1d6 for each slot level above 2nd.