You can see your breath create a cool mist as the temperature begins to drop rapidly, when suddenly the surrounding area is covered in a layer of ice. Each creature in a 60-foot emanation originating from you must make a Constitution saving throw. A creature takes 12d8 cold damage and is restrained for 1 minute on a failed save or half as much damage and isn't restrained on a successful one. At the start of each of its turns, a restrained creature can make a DC 15 Strength saving throw. On a success, the creature is no longer restrained. The ice turns the ground in the spell's area of effect into difficult terrain until the ice thaws in 1d4 days.

A creature killed by this spell becomes encased in ice and cannot be revived until the ice thaws in 1d4 days. The ice has AC 15 and a number of hit points equal to the encased creature's maximum hit points. If the ice breaks, the creature inside breaks with it and can only be revived by means of a true resurrection or a wish spell.