Verthunder II

Condenses aether into an AoE electrical attack on a target in range. All creatures within 15 feet of the target must make a Dexterity saving throw, taking 3d4 lightning damage on a failed save, or half as much on a successful save.

At higher levels: when this spell is cast using a spell slot of 3rd level or higher, it deals an additional 2d4 lightning damage for each level above 2nd.