You create a wall of thick icy mist on a solid surface within range. You can make the wall up to 60 feet long, 20 feet high, and 10 feet thick, and it vanishes when the spell ends. The wall’s space blocks line of sight, and is difficult terrain.
When the wall appears, each creature in its area must make a constitution saving throw. On a failed save, a creature takes 2d8 cold damage, and it is restrained for 1 minute. On a successful save, it takes half as much damage and isn’t restrained. This effect also applies to creatures who enter the wall's area for the first time on a turn, and those who end their turn in the wall's area. A restrained creature can make a strength saving throw at the start of each of its turns, ending the effect on itself on a success. On that turn, they can then move up to their speed, but can't use any actions, bonus actions, or reactions.
Creatures restrained by this spell who end their turn in the wall’s area take 2d8 cold damage.
At Higher Levels. When you cast this spell using a spell slot of 4th level or higher, the damage increases by 1d8 for each slot level above 3rd.
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