Electrical Storm

The surrounding air within 100 feet of you erupts in a violent electrical storm. Each creature in the affected area other than you takes 12d6 lightning damage, or half damage with a successful Dexterity saving throw.
The electrical storm sets fire to combustibles and damages objects in the area. It can melt metals with a low melting point such as lead, gold, copper, silver, or bronze. The extent of this damage must be determined by the GM. If the damage caused to an interposing barrier shatters or breaks through it, the burst can continue beyond the barrier to the limit of the spell’s range. Otherwise, it stops at the barrier, the same as any other spell effect.