Two zappers streak out from you targeting two creatures in range. The targets must be separate creatures.

Make a ranged spell attack for each zapper. On a hit, the target takes 4d6 lightning damage.

Whether the original attack hits or not a thunderous crack explodes centered on the original target. Each creature in a 10-foot-radius sphere (including the original target) must make a Constitution saving throw. A target takes 4d6 thunder damage on a failed save, or half as much damage on a successful one.

At Higher Levels. When you cast this spell using a spell slot of 4th level or higher, you create one additional zapper for each slot level above 3rd.