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Stinking Cloud

School conjuration (creation) [poison]; Level bloodrager 3, magus 3, shaman 3, sorcerer/wizard 3, unchained summoner 3, witch 3; Subdomain smoke 3; Elemental School earth 3

CASTING

Casting Time 1 standard action
Components V, S, M (a rotten egg or cabbage leaves)

EFFECT

Range medium (100 ft. + 10 ft./level)
Effect cloud spreads in 20-ft. radius, 20 ft. high
Duration 1 round/level
Saving Throw Fortitude negates; see text; Spell Resistance no

By the way…

The effects created by this spell do not move with a vehicle.

Source Skull & Shackles Player’s Guide

DESCRIPTION

Stinking cloud creates a bank of fog like that created by fog cloud, except that the vapors are nauseating. Living creatures in the cloud become nauseated. This condition lasts as long as the creature is in the cloud and for 1d4+1 rounds after it leaves. (Roll separately for each nauseated character.) Any creature that succeeds on its save but remains in the cloud must continue to save each round on your turn. This is a poison effect.

Stinking cloud can be made permanent with a permanency spell. A permanent stinking cloud dispersed by wind reforms in 10 minutes.