Bilrick Bimble's Below-Zero, Brain-Freezing Blast of Boreal Breeze

A cone of 30 ft of numbing cold wind erupts from your hands. Each creature in the cone must make a Constitution saving throw against your spell save DC. If they fail, they take 6d8 cold damage and they are restrained, as they are covered in ice. If they succeed, they suffer half as much damage and no additional effects. A creature can use its action to make a Strength check against you spell save DC to free itself from its icy imprisonment.

If the creature has 0 hit points after the damage, it becomes encased in ice and is petrified.

At Higher Levels. When you cast this spell using a spell slot of 5th level or higher, the damage increases by 1d8 for each slot level above 4th.