Chain lightning

NPC: Zhakar
Location: Raven's Dust > Rocky mountains > Fortress (55,1769,0)
Price: 35700
Skill point: 15
Required spell: Call lightning

70

Your wisdom/intelligence, your air power and the air resistance of your target.

-((1d41+23+self.int/28+self.wis/28)*self.air/target.r_air)

-(((1d41+23+self.int/28+self.wis/28)*self.air/target.r_air)*(20-r)/20)