Alabasters Ice-eruption

A line of long ice spikes, 60 feet long and 10 feet wide, emerges from you, jutting out from the ground in a direction you choose. Each creature in the line must make a Dexterity saving throw. A creature takes 3d8 cold damage on a failed save and their movement with drop to 0, or half as much damage on a successful one and are freely able to move.

At Higher Levels. When you cast this spell using a spell slot of 4th level or higher, the damage increases by 1d8 for each slot level above 3rd.