Wildfire

School evocation [fire]; Level druid 5, elementer 5, shaman 5, sorcerer/wizard 5

CASTING

Casting Time 1 standard action
Components V, S, M (a tindertwig worth 1 gp)

EFFECT

Range close (25 ft. + 5 ft./2 levels)
Area two or more 10-ft.-cubes of flame, see text
Duration 1 round/level (D)
Saving Throw Reflex half (object); Spell Resistance yes (object)

This spell ignites a spreading wildfire which grows in area as the spell persists. When you first cast the spell, you create two 10-foot cubes of flame: these cubes must be adjacent to each other. A creature that enters into the flame or starts their turn within it takes fire damage equal to 3d6 + 1 per caster level (max +20), with a Reflex save halving the damage taken that round. Plant-life and other combustible objects inside also take this damage.

Each round at the start of your turn the fire spreads, adding two additional 10-foot cubes to the spell’s area. These cubes must be adjacent to at least one of the already-existing cubes of the wildfire. If you are observing the spell, you can direct where these cubes are created: if not, the cubes are placed randomly, prioritizing moving downwind (if there is any wind blowing).

Exposure to moderate winds (11-20 mph) fans the flames, adding an additional 10-foot cube per round the winds affect the area, while strong winds (21+mph) instead add two additional 10-foot cubes each round.