Tons of Magic Dice

You conjure three glowing dice of magical inclination that rain down from the sky. Each die hits a creature of your choice that you can see within range. A die deals 3d6/3 (rounded down) force damage to its target. The dice all strike simultaneously, and you can direct them to hit one creature or several. The Dice created by this spell last until dispelled. 

At Higher Levels. When you cast this spell using a spell slot of 2nd level or higher, the spell creates one more die for each slot level above 1st.