From Pathfinder #220: Crypt of Runes, which isn't enabled.

Bittersweet Mask

HAZARD 18

Stealth +35 (master)

Description The many iron bars of this iron mask fits tightly around Javownir's head and snout, looking almost as if it was built in place to conform specifically to the shape of his skull with no apparent latch or hinge for it to be removed.

Disable DC 45 Thievery (expert) twice to find the Hidden latches, DC 48 Athletics (master) to wrench the mask open quickly enough to prevent it from triggering before it's destroyed, Dispel Magic (9th-rank; counteract DC 35), or automatic with Spleen's key

AC 42; Fort +36, Ref +27

Hardness 30, HP 120 (BT 60); Immunities critical hits, precision

Linked to Javownir

Whenever the mask takes damage, Javownir takes the same damage (DC 44 basic Reflex save)

Toxic Off-gassing

Trigger The mask takes damage, or an Athletics check to wrench it free fails or critically fails

Effect The mask creates a cloud of poison gas in a 20-foot emanation around Javownir. Creatures in the area take 6d12+41 poison damage (DC 44 basic Fortitude save; Javownir treats the result of this save as one degree of success worse than the rolled result).

Reset The mask resets automatically at the start of the round after it is triggered.

Pathfinder #220: Crypt of RunesORC