Ball Lightning

You create three brilliant globes of crackling electricity. Each one travels to a point of your choice within range, and can be directed around corners or through openings larger than one foot in diameter. So long as no obstacle completely bars its path, upon reaching the specified point, a globe detonates in a thundering explosion. (If one is directed through an opening smaller than one foot in diameter, or if it is directed through an barrier, it will explode there instead). When it does, each creature within a ten-foot-radius sphere must make a constitution saving throw, taking 2d8 Thunder damage on a failed save, or half as much damage on a successful one. If a creature is affected by more than one, it takes damage from and must roll separately for each of them. 

After a failed save, a creature is blinded and deafened for one minute. A creature can make a constitution saving throw at the end of each of its turns, ending the effects on itself on a success

At Higher Levels. When you cast this spell using a spell slot of 6th level or higher, the spell creates one more orb for each slot level above 5th.