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From Pathfinder Society Scenario #6-20: The Overthrow of Ambition, which isn't enabled.

Harbinger of Ingalor

CREATURE 7
RARELARGEANIMALMINDLESSSWARMUNHOLY
Perception +15
Skills Acrobatics +17, Survival +15
Str +0, Dex +6, Con +4, Int -5, Wis +2, Cha -1
AC 22; Fort +14, Ref +18, Will +10
HP 80; Immunities acid, precision, swarm mind; Weaknesses area damage 8, holy 5, spirit 5, splash damage 8; Resistances bludgeoning 5, piercing 8, slashing 8
Chthonic Cloud

Creatures inside the swarm's space are Concealed from creatures outside of its space, and vice versa.

Disgusting Chorus (auditory, aura)

20 feet. The swarm's component members cry out, crawling all over everything and everyone with sickening sounds and limbs. Creatures who enter or begin their turns inside the aura must attempt a DC 25 Fortitude save. Once a creature has been targeted by this ability, regardless of the result, they are temporarily immune to Disgusting Chorus for 1 hour.

Success No effect.

Failure The creature becomes Sickened 1, and cannot reduce their sickened condition below 1 while inside the swarm's space.

Critical Failure The creature becomes Sickened 2, and cannot reduce their sickened condition below 1 while inside the swarm's space.

Speed 5 feet, fly 30 feet
Feast on Flesh

The swarm pulls at flesh just as locusts strip away vegetation. Each enemy in the swarm's space must succeed at a DC 23 Fortitude save or take 3d6 persistent bleed damage.

Swallowed Foulness
Trigger A creature begins its turn inside the swarm's space and isn't holding its breath
Effect Individual insects swarm down the creature's throat and explode, dealing them 1 acid damage and requiring them to make a DC 25 Will save.

Success No effect.

Failure The creature becomes Stupefied 1 until the end of their current turn as they recover from the disgusting experience.

Critical Failure As success, but until the end of their next turn.

Thousands of Teeth

Each enemy in the swarm's space takes 3d10 piercing damage (DC 25 basic Reflex save)

Pathfinder Society Scenario #6-20: The Overthrow of AmbitionORC