Rain of Fire

Evocation [Fire]
Spellcraft DC: 50
Components: V, S
Casting Time: 1 minute
Range: 0 ft.
Area: 2-mile-radius emanation
Duration: 20 hours
Saving Throw: Reflex negates (see text)
Spell Resistance: Yes
To Develop: 450,000 gp; 9 days; 18,000 XP. Seeds: energy (fire) (DC 19), energy (weather) (DC 19). Factor: change rain to wisps of flame (ad hoc +12 DC).
This spell summons a swirling thunderstorm that rains fire rather than raindrops down on the character and everything within a two-mile radius of him or her. Everything caught unprotected or unsheltered in the flaming deluge takes 1 point of fire damage each round. A successful Reflex save results in no damage, but the save must be repeated each round. Unless the ground is exceedingly damp, all vegetation is eventually blackened and destroyed, leaving behind a barren wasteland similar to the aftermath of a grass or forest fire. The fiery storm is stationary and persists even if the caster leaves.