Storm Sphere Arcane Eye may earn a small commission from affiliate links in this article. Learn more. 4th level Evocation Is Storm Sphere Good? Overall Rating: Sky Blue. This means that Storm Sphere is an amazing spell. If you do not take this spell your character would not be optimized. Overall Notes: Simply an amazing spell. 20ft radius that hits like a greatsword and a bonus action to deal 4d6 every turn.