Ball of Ice

A stroke of ice streaks out from your palms hitting a point you can see in range. Each creature in a 20-foot-radius sphere centered on that point must make a Dexterity saving throw. A target takes 8d6 cold damage, and makes attacks at disadvantage until the beginning of it's next turn on a failed save, or half as much damage on a successful one, with no disadvantage.

The ice does not spread around obstacles.

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.