You summon a hellstorm of otherworldly ash and cinders. White like snow, you blast your foes in a tempest of destruction and rot. 

The Caster Emits a cone from where they stand extending out up to 60 ft. away, conjuring a blinding rotating blizzard of rotting white ash, dust and force. The blizzard causes all inside it to be trapped in its funneled wrath suffering reduced movement from rough terrain and must make a strength save (dc 22) to exit through a wall of force on the side, or simply reach the end of the tunnel, 60 ft. away. The initial impact on casting causes 6 d6 Force damage and 6 d6 Necrotic damage and deals that same force and necrotic damage for each creature that starts their turn inside the Blizzard Stream. At the end of each turn, each individual in the blizzard must make a Constitution Saving throw against the casters spell save dc or gain a level of Exhaustion. Any target that dies in the Blizzard is left a hollow desiccated husk or a disintegrated remnant of what they once were.

After casting the spell the caster takes 1 d4 -1 levels of exhaustion. The level of exhaustion is lessened by 1 for every turn early that the caster ended the spell.