Call Lightning

V, S; Concentration - 10 Minutes
A 10 ft tall 60 ft with radius cylindrical cloud
appears within 120 ft directly above you.
As you cast, choose a point under the cloud. A
bolt of lightning flashes to that point. Each crea-
ture 5 ft DEX ST 3d10 lightning damage / half.
Action to call down lightning in this way again.
Outdoors in stormy conditions, the spell's
damage increases by 1d10.