From Pathfinder Society Scenario #3-10: Delve the Pallid Depths, which isn't enabled.

Caustic Mud Pot

COMPLEX HAZARD 3

Stealth +11 (trained)

Description Solid ground gives way to a lake of bubbling mud that burns anyone who enters and routinely belches out sulfur.

Disable DC 20 Survival (trained) to find and remove the stones blocking the flow of water to the mud pot. The water decreases the viscosity of the mud, allowing steam and sulfur to escape gradually, rather than in violent bursts, so creatures can pass through unharmed. The hazard requires one successful checks to disable. Attempting the check takes two actions.

Belch

Trigger A creature other than a sulfuric slime comes within 10 feet of the mud pot

Effect The hazard rolls initiative as a gaseous cloud explodes out of the mud. The triggering creature takes 1d10+6 acid damage DC 20 basic Reflex

Sulfur Poisoning (poison)

Saving Throw DC 17 Fortitude

Maximum Duration 4 rounds

Stage 1 1d10 poison damage

Stage 2 1d12 poison damage and Sickened 1 (1 round)

Stage 3 2d10 poison damage and Sickened2 (1 round)

Routine (1 action) On its initiative, the mud pot belches a cloud of sickening sulfur into the small cavern. Creatures other than sulfuric slimes within 10 feet must succeed at a DC 17 Fortitude save or be exposed to sulfur poisoning.

Pathfinder Society Scenario #3-10: Delve the Pallid DepthsOGL