Blizzara (Blizard II)

You release a burst of ice aspected aether around yourself in a 10ft. radius circle. Each creature in range must succeed on a Dexterity saving throw or take 3d6 cold damage and become restrained. On a success creatures take half as much much and are not restrained. A creature restrained by the ice can use its action to make a Strength check against your spell save DC. On a success, it frees itself.