The Vesper-Grog Pressurized Still
A malfunctioning distillation apparatus that leaks volatile fluids and builds internal pressure until it vents toxic gases and acidic sprays.
The Vesper-Grog Pressurized Still
Defenses
Detection
“A cluster of five copper vats interconnected by lead pipes and glass tubes. The central vat is translucent, showing a churning neon-green liquid that glows faintly. Brass gauges on the side quiver near the red zone.”
Standard Engagement
The still activates if a creature moves within 10 feet of it or if the vats take any damage.
On its initiative, the hazard follows this sequence: 1. Venting Hiss: It releases a cloud of gas. 2. Build Pressure: The clanging speeds up, and the glass glows brighter. 3. Acidic Overload: If the trap has been active for 3 rounds, it sprays acid in a 30-foot line before resetting its routine.
The trap shuts down and resets after 5 minutes of no creatures being within 30 feet, provided the chemical reservoirs are not empty.
A 15-foot cube of toxic vapor erupts from the pipes. Each creature in the area must make a DC 13 Constitution saving throw, taking 7 (2d6) poison damage on a failed save, or half as much on a success.
The main vat cracks, spraying a 30-foot line of acid. Each creature in the line must make a DC 13 Dexterity saving throw, taking 10 (3d6) acid damage on a failed save, or half as much on a success.
If the still takes fire damage, it explodes. Each creature within 20 feet must make a DC 14 Dexterity saving throw, taking 14 (4d6) fire damage on a failed save, or half as much on a success. This destroys the hazard.
The floor within 10 feet of the still is difficult terrain due to oily chemical leaks. A creature that moves into or through this area must succeed on a DC 12 Dexterity (Acrobatics) check or fall prone.
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