Flammable FumesSpell 5

Source Pathfinder Secrets of Magic
Traditions Arcane, Primal
Cast Three Actions

(material, somatic, verbal)
Area 20-foot burst
Range 120 feet
Duration 1 minute

Sending magic deep underground, you conjure a cloud of toxic gases that swiftly degenerate into volatile fumes. The gases are invisible, requiring a successful Perception check against your spell DC to detect visually, though their acrid smell and toxic effects are clear once a creature has entered the cloud. A creature that enters the cloud or is within the cloud at the start of its turn takes 2d6 poison damage. A creature can take the poison damage from flammable fumes only once per round.

One round after you conjure the cloud, the gases loses stability and become flammable. If an open flame is brought into the cloud, or if anyone within the area uses a fire effect, the cloud detonates in a massive blaze that deals 10d6 fire damage to all creatures within it, and the spell ends.

Heightened (+2) The poison damage increases by 1d6 and the fire damage on an explosion increases by 2d6.

Traits

Common

Anything that doesn't list another rarity trait (uncommon, rare, or unique) automatically has the common trait. This rarity indicates that an ability, item, or spell is available to all players who meet the prerequisites for it. A creature of this rarity is generally known and can be summoned with the appropriate summon spell.

Conjuration

Effects and magic items with this trait are associated with the conjuration school of magic, typically involving summoning, creation, teleportation, or moving things from place to place.

Poison

An effect with this trait delivers a poison or deals poison damage. An item with this trait is poisonous and might cause an affliction.