You arch upwards in a flash of lightning and come crashing down onto a point within range. Each creature other than you within a 30 foot radius must make a Dexterity saving throw or take 8d8 lightning damage and is stunned until the end of your next turn. On a successful save, the creature takes half as much damage and isn't stunned.   You can then teleport to an unoccupied space you can see within 5 feet of a target that failed their saving throw, and make one melee weapon attack against it. On hit, you deal an en extra 2d8 lightning damage.