Verthunder

Condenses aether into an electric attack on a target within a 75 foot range. The target must make a Dexterity saving throw, taking 5d4 lightning damage to the target on a failed save, or half as much on a successful one. This spell takes your whole turn (action, bonus action, free actions and movement) to cast, unless it is cast using an ability/feature that specifies the action type required.

At higher levels When this spell is cast using a spell slot of 2nd level or higher, it deals an additional 3d4 lightning damage for each level above 1st