dehydrate

you touch a piece of material containing moisture, you then suck the moisture and water from it and make it 1/2 as heavy. you also make the material inedible. any plant creature you touch with this spell take 2D10 necrotic damage and any creature excluding fiends, constructs, celestials take 1D10 necrotic damage. water elementals and some oozes may die instantly from this though.