Transmutation [Cold]
Level: Sorcerer 6, Wizard 6
Components: V, S, Coldfire
Casting Time: 1 round
Range: Medium (100 ft. + 10 ft./level)
Duration: 1 hour/level
Saving Throw: None
Spell Resistance: No
You imbue an area with a combination of cold and negative energies that suppresses flame. Illumination emitted by fire (torches, continual flame, and so on) is reduced by half. For example, a hooded lantern within the area of a suppress flame spell clearly illuminates a 15-foot radius (instead of a 30-foot radius) and provides shadowy illumination in a 30-foot radius (instead of a 60-foot radius).
In addition, all damage caused by fire, including all fire spells and spell-like effects, is reduced to 1 point per die. So, a fireball cast by a 10th-level wizard would deal 10 points of fire damage to those who fail their Reflex save or 5 points of fire damage to those who make their Reflex save, rather than 10d6 points of fire damage or half that amount, respectively, outside the confines of a suppress flame spell. A caster can make a caster level check (DC 10 + the suppress flame’s caster level) to cause normal amounts of damage from fire spells. A new caster level check must be made for each spell cast.
Coldfire Component: Ten ounces of coldfire (500 gp).
Source: Frostburn, page 105.