Chromatic Barrage

You create six glowing 6-inch-diameter spheres of energy, each associated with a different element: acid, cold, fire, lightning, poison, and thunder. Each sphere deals 2d8 damage of it's associated element. The spheres all strike simultaneously, and you can direct them to hit one creature or several within range. For each creature targeted, make a single attack roll for all spheres targeting them. 

At Higher Levels. When you cast this spell using a spell slot of 7th level or higher, the spell creates one more sphere of your choice for each slot level above 6th.