Source: Book of Spirits p140
This Numen is most often possessed by water-spirits, although rumors speak of blood-spirits that use it to devastating effect. Desiccation allows a spirit to withdraw some or all of the fluid most closely associated with it from its opponent’s body. Water-spirits can drain their victims of the water in their bodies; blood-spirits can do the same with blood. The range is five yards per point of power. Roll Power + Finesse; the number of successes determines the number of points of damage the target takes from loss of fluid. The damage is bashing. Due to a lack of real biology, vampires and the Created may contest the spirit’s roll with Stamina + Supernatural Tolerance; however, if the spirit wins the contest, the supernatural loses a point of Vitae or Pyros in addition to taking bashing damage.