Azarphan's Grasp

You freeze the air around the feet of a creature within range. The target must make a Strength saving throw. On a failed save, the creature takes 3d6 cold damage, and their movement speed is halved for the duration. On a successful save, the target takes half damage, and their movement is not reduced. If the saving throw fails by 5 or more, the creature is restrained for the duration instead of slowed.

At the end of each of its turns, the target takes another 2d6 cold damage, and can make another Strength saving throw. On a success, the spell ends on the target.

At Higher Levels. When you cast this spell using a spell slot of 4th level or higher, you can target one additional creature and the damage increases by 1d6 for every two slot levels above 2nd.