Frigid Grasp

You conjure three swirling masses of elemental ice and hurl them at targets within range. You can hurl them at one target or several. Make a ranged spell attack for each mass of ice. On a hit, a target takes 2d4 cold damage, and if the target is a creature that is large or smaller, it must succeed on a Strength saving throw or be restrained by magical ice until the end of your next turn. A creature cannot be forced to make this saving throw more than once per casting of this spell. Each mass of ice can also be used to extinguish up to a 5-foot cube of magical or nonmagical fire within range or freeze a 5-foot cube of unoccupied liquid within range for the spell's duration. 

At Highr Levels. When you cast this spell using a spell slot of 3rd level or higher, you create one additional mass of ice for each slot level above 2nd.