By means of this spell, the caster creates a common fire of up to 12 feet per side in area. Though it lasts only a single round (unless it ignites additional flammable material), the fire produced by the spell inflicts 1d4 points of damage plus 1 point per caster level (1d4 + 1/level) upon creatures within its area. It ignites combustible materials, such as cloth, oil, paper, parchment, wood, and the like, so as to cause continued burning.
The reverse, quench fire, extinguishes any normal fire (coals, oil, tallow, wax, wood, etc.) within the area of effect.
The material component for either version is a paste of sulfur and wax, formed into a ball and thrown at the target.