add airFire4

spells/airFire4.tex

+\spell{Storm Blast}% Name
+  {\mAir\ and \mFire}% Spheres
+  {Wax}% Action
+  {\detailed, \divergent, \duplicated}% Enhancements
+  {Seafaring}% Skill
+  {\spellArea\ targets lose \arabic{spelllevel} \glspl{ap} while lightning hits them for \arabic{spelllevel} Damage}% Description
+  {
+    During any \gls{interval} where lightning flashes, the caster can seize the ambient fire in the air, and channel it into a powerful blast of lightning and wind.
+
+    The resulting boom inflicts \dmg{spelllevel} Damage on \spellArea\ targets, and reduce their \glspl{ap} by \arabic{spelllevel}.
+    Armour does nothing to shield the targets -- the lightning finds a way through.
+
+    Casters should ensure they have enough targets before starting this spell, or it will target them and their companions.
+    The range of \spellRange\ can also present a problem, as the first target must be close, and subsequent targets must be within \spellRange\ of another for the storm to pass through them.
+  }