From Pathfinder #186: Ghost King's Rage, which isn't enabled.

Phantom Soldiers

HAZARD 18

Stealth +35 (master)

Description Spirits of long-dead soldiers appear in the mist and attack intruders.

Disable DC 45 Intimidation (legendary) to scare off the soldiers or DC 46 Deception (legendary) to order the soldiers to stand down

Battle (attack)

Trigger A creature enters the area

Effect Spirit soldiers lunge out of the mist and attack intruders. The spirit soldiers attempt a spear Strike against each creature within 30 feet.

Melee Spear +38, Damage 6d12+41 piercing

Reset 1 hour.

Pathfinder #186: Ghost King's RageOGL