Desiccating Breath 2014
4th-level evocation
You spew forth a cloud of black dust that draws all moisture from a 30-foot cone. Each animal in the cone takes 4d10 necrotic damage, or half as much damage if it makes a successful Constitution saving throw. The damage is 6d10 for plants and plant creatures, also halved on a successful Constitution saving throw.
Source: Deep Magic for 5th Edition (Kobold Press) · License: OPEN GAME LICENSE Version 1.0a details