You choose a point within range and cause snow and ice to explode there, forming a massive crystalline flower that then shatters. Each creature in a 20-foot-radius sphere centered on that point must make a Dexterity saving throw. A target takes 8d6 cold damage on a failed save, or half as much damage on a successful one.

After a failed save, a target's body is chilled for 1 minute. During that time, it rolls a d6 and subtracts the number rolled from all its attack rolls and dexterity saving throws, and on its turn it can either use an action or a bonus action, not both.

The target can make a Constitution saving throw at the end of each of its turns, ending the effect on itself on a success.