Brass-Coil Steam Press
A heavy brass-plated wall section connected to high-tension springs and a steam boiler. When triggered, the wall slams across the hallway to crush intruders against the far side before venting superheated exhaust.
Brass-Coil Steam Press
Defenses
Detection
“A 10-foot section of the hallway features walls lined with decorative brass filigree. The floor tiles here are slightly bronze-tinted and polished. Deep vertical seams are visible where the brass meets the stone.”
Standard Engagement
A pressure plate that covers a 10-foot by 10-foot area in the corridor. The hazard triggers when more than 50 pounds of weight is placed on the plate.
None
The press automatically retracts after 1 minute, resetting the internal clockwork gears and reheating the steam boiler.
When triggered, the brass wall slams into the opposite side of the hall. Each creature in the 10-foot square must make a DC 15 Dexterity saving throw. On a failure, a creature takes 22 (4d10) bludgeoning damage and is Restrained. On a success, the creature takes half damage and is pushed to an adjacent unoccupied space of its choice.
Immediately after the slam, the press releases a burst of steam. Any creature restrained by the press or within 5 feet of it must make a DC 15 Constitution saving throw, taking 11 (2d10) fire damage on a failure, or half as much on a success.
A creature restrained by the press can use its action to make a DC 15 Strength (Athletics) or Dexterity (Acrobatics) check to slide out from between the brass wall and the stone, ending the Restrained condition.
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