It forms a jagged block of ice on the spot the target is occupying, freezing them then smashing the ice in an explosion, dealing further damage. The targeted creature makes a dexterity saving throw, taking 4d10 cold damage and 2d8 piercing damage or half as much on a successful save.

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