Devouring Ice

You summon a ring of ice from the ground under a creature. The target must make a Constitution saving throw. On a failed save, the target takes 5d6 Cold damage and is restrained in ice. The target may repeat the saving throw at the end of each of its turns to end the restrain. Until the restrain is ended, the target takes 10 cold damage at the start of each of its turns. If the target makes the saving initial Constitution saving throw, it takes half damage and is not restrained.

At Higher Levels. When you cast this spell using a spell slot of 4th level or higher, the initial damage increases by 1d6 and the restrained damage by 5 for each slot level above 3rd.