Wall of Cold

4th-level evocation

Casting Time: 1 action
Range: 100 feet
Components: V, S, M (a cup of water)
Duration: Concentration, up to 5 minutes, or Instantaneous

You create a translucent field of numbing force that you can use in one of two ways:

• Wall: When used as a wall, you can form it into a hemispherical dome, or a sphere, with a radius of up to 10 feet, or you can shape it into a flat surface made up of 10-foot square panels. Each panel must be contiguous with another panel. In any form, the wall is 1 foot thick and lasts for the duration.
• Wave: A blast of force explodes outward from your hands for up to 75 feet, rapidly expanding until the wave reaches 40 feet across.

All creatures that come in contact with either the wave or the wall must make an immediate Dexterity Save. Those that fail take three levels of exhaustion due to the extreme cold and 6d6 damage. Those that save successfully are stunned for one round and take 4d6 damage. Exhaustion from the spell is removed after a short rest.