Thunderstorm

You draw lightning from a source of electricity, linking it in an arcing line to an object or creature you can see. Potential sources include lightning clouds, machinery if it exists, and the products of other spells, such as Storm Sphere.

A creature targeted by the spell must make a Constitution saving throw. On a failed save, it takes 3d8 lightning damage, or, if the source can deal lightning damage on its own, as much lightning damage as the source would do to it.

An object specially affected by electric current will be affected as though imbued with a current, while any other object takes 3d8 lightning damage, or, if the source can deal lightning damage on its own, as much lightning damage as the source would do to it.