Whenever you you cast this spell, you have a chance you hit the preferred person on a nat 20, but if you get anything other than a nat 20 or a nat 1 a random person in the world gets struck buy lighting. If you get a nat 1 you or one of your friends get stuck. If preferred target or anyone in your party get struck: they take 10d8 electric damage (unless they are immune to electric damage) Iif immune to electric damage you take half the damage as a full hit