Ash Storm Edit
Level 4 Evocation - V,S,M (Ruby 20g+ worth) / Full Round Action - 60'+5'/Level - 50' Radius Area - 1min concentration
A raging storm of burning ash and soot with flaming coals churns in a 50' radius (100' across) circular storm obscuring vision to 10' within. Enemies in the area at cast take 4d6 fire at cast and 2d6 fire at the beginning of each turn they start within the Ash Storm. Enemies effected by Ash Storm may make a Dexterity save each time effected to take 1/2 damage.
@Higher Levels:: Each additional spell level at cast increases both initial and over-time damage by another 1d6.