Comets

You coalesce debris and moisture into a swarm of projectiles and send it arcing towards three points of impact you can see within range.  Each creature in a 10-foot-radius sphere centered on each point you choose must make a Dexterity saving throw. A target takes 3d6 cold damage and 3d6 bludgeoning damage on a failed save, or half as much damage on a successful one.

A creature can only be affected by one impact.

At Higher Levels. When you cast this spell using a spell slot of 4th level or higher, the damage increases by 1d6 for each slot level above 3rd. You can choose to increase either the frost or bludgeoning damage portion.