Diamond Storm

Snow and hail swirl and coalesce into massive icy flowers at four different points you can see within range, and then shatter in a spectacular and deadly display. Each creature in a 40-foot-radius sphere centered on each point you choose must make a Dexterity saving throw. The sphere spreads around corners. A creature takes 20d6 cold damage and 20d6 bludgeoning damage on a failed save, or half as much damage on a successful one. A creature in the area of more than one icy burst is affected only once.

The spell damages objects in the area and freezes liquids not being carried.