Umbral wind blast (Ordo Zephyrius Mutatoris spell)

From LSWiki

Ordo Zephyrius Mutatoris Spell: Umbral Wind Blast

   Relevant Attributes: three parts charisma and one part intelligence
   Relevant Skills: four parts evocation, one part aeroturgy, one part conjuration, and one part skiaturgy
   Rating Requirement: one hundred forty-five
   Knowledge Requirement: Umbral fieldcraft skill of 20 or higher and have at least 40
   points among physics skill and cosmology skill; or be a Stalker of the Gate
   Effective Maximum Rating: three hundred forty-five
   Difficulty: ordinary
   Forms of Evocation:
       umbral wind blast
       umbral wind blast <target>
   Base Energy Costs: twenty-nine points of spiritual energy

   This spell is a somewhat strange variant on wind blast, 
   as it isn't clear that there is such a thing as wind 
   or air per se on the umbra.  It carries umbral mana along 
   a separate gust of reified air.  This is one of a handful 
   of spells accessible to those with familiarity with umbral meteorology.

   Development Information: This spell was created by Twilight; the source code was last updated Fri Mar 25 17:19:48 2011.