Triple Point

You cause the water within a point, whether it is liquid water or the humidity in the air, to rapidly shift between shapes of matter. Each creature in a 10-foot-radius sphere centered on point must succeed on a CON saving throw or take 3d6 each of cold, fire, and piercing damage as they are subject to boiling vapors and flying shards of ice. A creature submerged partially or fully in water makes this save with disadvantage.

This spell may not target a point with arguably little to no moisture, such as desert air or a space simply devoid of matter, or a body of water already under magical manipulation.