Destroy Helm

When this spell is cast on a spelljamming helm, The seat and the spelljamming magic of the helm are completely destroyed.

You must have line of sight on the helm for the entire casting of the spell, not simply the ship that houses it. If the helm is being operated, the person operating the helm takes 4d8 lightning damage and must make a Wisdom saving throw. If they fail the saving throw, the are knocked unconscious for 1d10 minutes.

Any other creatures within 30 feet of the operating helm at the time of destruction must succeed on a Dexterity saving throw or take 4d4 lightning damage. If the helm is not operating, the electrical explosion only affects creatures within 15 feet of the helm.