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

Choking Tethers

COMPLEX HAZARD 20

Stealth +38 (legendary)

Description Three shadow tethers form when a creature reaches the hall's midpoint; each lashes, grabs, and crushes creatures in the hall.

Disable DC 48 Thievery (legendary) to disable each tether or Dispel Magic (10th rank, counteract DC 48) to counteract each tether

AC 45; Fort +36, Ref +30

Hardness 33, HP 132 (BT 66); Immunities critical hits, precision

Constrict

4d10+22 bludgeoning, DC 47 basic Fortitude

The monster deals the listed amount of damage to any number of creatures Grabbed or Restrained by it. Each of those creatures can attempt a basic Fortitude save with the listed DC.

Seize (attack)

Trigger A creature reaches the hall's midpoint

Effect The trap attempts a shadow tether Strike against the triggering creature. On a hit, the triggering creature is automatically Grabbed. The trap then rolls initiative.

Melee Shadow Tether +38, Damage 4d10+22 bludgeoning

Plus the creature is automatically Grabbed

Routine (six actions) This trap loses 2 actions each turn for each disabled shadow tether. Each shadow tether has 2 actions it can use to either Strike a creature or Constrict a Grabbed creature, in any combination.

Pathfinder #186: Ghost King's RageOGL