On the casting of this spell, a ray of dark green light is projected from the caster's fingertips, up to a range of 48 yards. Anything organic in the path of the ray (such as wood, leather, and items of clothing) will rot and turn to dust instantaneously. If cast against characters' or monsters' clothing or armour, they are allowed a test against WP to avoid the spell's effects. Nothing living or magically animated will be affected by this spell, with one exception - Zombies struck by the ray will immediately become Skeletons, with normal Skeleton characteristics.