Voltaic Bolt

When you cast this spell, choose a ranged weapon (or a weapon with the thrown property) within reach. The next ranged attack made with the chosen weapon deals an extra 2d8 lightning damage, in addition to any damage that it would deal normally, provided the spell hasn't ended. The spell lasts until the end of your next turn. The spell ends prematurely if your concentration is broken, or once a successful attack is made with the chosen weapon.

At Higher Levels. When you cast this spell using a spell slot of 2nd level or higher, the damage increases by 1d8 for each slot level above 1st.