You surround yourself with five balls of lightning. As an action, you can command one or more of the balls to fire a lightning bolt at a target, destroying the ball. Make a ranged spell attack. On a hit, the target takes 2d6 lightning damage. If all the clouds are destroyed, the spell ends.   If a creature hits you with a melee weapon attack while this spell is active, you can use your reaction to destroy one of the lightning balls, immediately dealing 3d6 lightning damage to the target. You take this reaction before making any saving throws to maintain concentration.