Do you want to build a snowman?

As an action you can cast this spell on a creature that you can see within range. The target must succeed on a strength saving throw (the DC is the same as your spell save DC) or be completely covered by a swarm of snow before being completely encased by a solid snowman. The creature trapped inside is restrained. As an action, the creature can attempt a strength saving throw, if it succeeds it breaks out of the snowman and then ends its turn. when a creature starts its turn inside the snowman it takes 2d8 cold damage

when you cast this spell with a spell slot above 2nd level, it gains 1d8 cold damage for every spell slot above 2nd