You create an area of extreme cold that draws moist from the air to create a wall of ice. You can form it into a hemispherical dome or a sphere with a radius of up to 10 feet, or you can shape a flat surface made up of ten 10-foot-square panels. Each panel must be contiguous with another panel. In any form, the wall is 1 foot thick and lasts for the duration. If the wall cuts through a creature's space when it appears, the creature within its area is pushed to one side of the wall and must make a Dexterity saving throw. On a failed save, the creature takes 10d8 cold damage, or half as much damage on a successful save.

The wall is an object that can be damaged and thus breached. It has AC 12 and 30 hit points per 10-foot section, and it is vulnerable to fire damage. Reducing a 10-foot section of wall to 0 hit points destroys it and leaves behind a sheet of frigid air in the space the wall occupied. Even if you loose concentration early on this spell, the frigid air lingers where the wall was for the full duration of the spell. A creature that moves into an area of frigid air on a turn or ends its turn there must make a Constitution saving throw. That creature takes 5d8 cold damage on a failed save, or half as much damage on a successful one.