Ul Huma

You materialize and shoot a pillar of ice 200ft in a straight line, each as thick as a hundred spears bundled together. Each creature in a 10ft line must make a Constitution saving throw. A creature takes 10d8 cold damage on a failed save, or half as much damage on a successful one.

A creature killed by this spell becomes a frozen statue until it thaws.

At Higher Levels. When you cast this spell using a spell slot of 6th level or higher, the damage increases by 1d8 for each slot level above 5th.