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Explosive Steam TrapHazard 7

Legacy Content

Complex Mechanical Trap 
Source Pathfinder #179: Cradle of Quartz pg. 55
Complexity Complex
Stealth DC 20 (trained) to find the desk switch; DC 28 (expert) to find the trapdoor and charge
Description A black-powder charge fastened to a trapdoor (marked with a “T” on the map) blows a hole in a steam tunnel, filling the room with superheated steam.
Disable DC 18 Thievery (trained) to disarm the desk switch; DC 28 (expert) to disarm the trapdoor charge
AC 25, Fort +18, Ref +15
Trapdoor Hardness 8, Trapdoor HP 50 (BT 25); Immunities critical hits, object immunities, precision damage
Explosive Charge [reaction] Trigger The desk switch is pressed or the trapdoor is opened; Effect The charge on the door explodes. All creatures within 10 feet take 2d10+6 fire damage, 1d10+3 piercing damage, and 1d6 persistent bleed damage (DC 22 basic Reflex save). The room is filled with steam, making all creatures within the room concealed. The trap then rolls initiative.
Routine (1 action) The trapdoor emits a jet of superheated steam. Each creature in the room must attempt a DC 28 Fortitude save.
Critical Success The creature is unaffected.
Success The creature takes 1d10+3 fire damage.
Failure The creature takes 2d10+6 fire damage and is blinded for 1 round.
Critical Failure The creature takes 2d10+6 fire damage, is fatigued, and is blinded for 1 round.