Desiccating Breath

4th-level evocation

Casting Time: 1 action
Range: Self (30-foot cone)
Components: V, S, M (a clump of dried clay)
Duration: Instantaneous

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.