Conducting Shock

A creature you can see within range becomes the origin of a current which spreads to those nearby. The target and each creature around it must make a Constitution saving throw. A creature takes 3d8 lightning damage on a failed save, or half as much damage on a successful one.

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