Pupuhi
Pupuhi is a level four necromancy spell with a range of thirty feet.
Pupuhi releases a blast of dark energy that evaporates water. If cast upon a small plant, it will immediately wither and die having all its water drained from it. Cast upon an adult, they will become dangerously dehydrated and need to have fluids replenished intravenously.
The amount of water the spell evaporates is around two to three gallons which is useful for nautical and electronic work to keep water out of where it should not be.
Federal law prohibits this spell to be cast upon humans and there are currently twelve states including Texas and Ohio that ban all spells of this class. Be sure to check local regulations before casting.