Produce Fire

By means of this spell, the caster causes a common fire of up to 12 feet per side in area. Though it lasts but 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.

Reverse: Quench Fire

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.

Reversible

Sphere: Elemental (Fire)
(Alteration)
Level: 4

Range: 40 yards
Components: V, S, M
Duration: 1 round
Casting Time: 7
Area of Effect: 12-foot square
Saving Throw: None

Material Components:
a paste of sulfur and wax