This simple spell entry from the Lost Magic contest might fill a flavorful niche in your Pathfinder game. Take a look at Mark Martin’s desiccating breath spell.
Desiccating Breath
School necromancy; Level cleric 4, sorcerer/wizard 5, witch 4
Casting Time 1 standard action
Components V, S, M (bone dust)
Range 25 ft.
Area cone-shaped burst
Duration instantaneous
Saving Throw no; Spell Resistance yes
You exhale a breath of the driest air, instantly drawing water from flesh and bone. Each target in the burst takes 1d4 Strength damage as muscle, flesh, and bone become dry and brittle. This spell targets living creatures only.
Nice and evocative. But players are going to hate it the first time their frontline melee fighters get tagged by it.
Good stuff!
Tomb trap written all over this one, on par with salt acid.