Crackling with lightning, you teleport up to 120 feet to an unoccupied space that you can see. Each creature within 5 feet of both the space you left and your new space must make a Dexterity saving throw. A creature takes 1d12 lightning damage on a failed save or half as much damage on a successful one.   On each of your turns for the duration, you can use your bonus action to call up the lightning and open such a storm door again, targeting a different space with the door each time. If you are outdoors when you cast this spell, a storm develops within 1 minute and follows you. Under such conditions, the spell’s damage increases to 2d12, and you can teleport up to 240 feet.