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From Pathfinder Society Scenario #4-16: Dacilane Academy's First Great Prank War, which isn't enabled.

Hallways Full of Mostly Illusory Opossums

HAZARD 3
Stealth +7
Description Several distressed opossums dressed in school uniforms and under the effects of Mirror Image fly about the hallway, guided by four giggling sprites.

Disable DC 20 Diplomacy, DC 20 Deception, or DC 20 Intimidation four times to convince one sprite to undo their spells; DC 22 Athletics, DC 22 Diplomacy (with wild empathy) or DC 22 Nature to subdue or soothe the opossums; or Dispel Magic (2nd rank; counteract DC 18) to undo one sprites' worth of spells. Four successes are required to disable the hazard.

AC 22; Fort +14, Ref +12
HP 46 (BT 23); Immunities precision, swarm mind; Weaknesses area damage 5, splash damage 5

Swarm Mind

This monster doesn't have a single mind (typically because it's a swarm of smaller creatures), and is immune to mental effects that target only a specific number of creatures. It is still subject to mental effects that affect all creatures in an area.

New Targets
Trigger A creature walks into the room

Effect The sprites scream "Surprise!," attempt a opossum flyby Strike, and roll initiative.
Melee Opossum Flyby +12, Damage 1d10+6 piercing
Pathfinder Society Scenario #4-16: Dacilane Academy's First Great Prank WarOGL