Acid Mist

A magical guardrail that answers a misstep on the stairs with a searing cloud of acid. Spot it with Stealth +10 (trained); shut it down with Thievery DC 26 (expert) to deactivate the trap's sensors, or Arcana DC 24 (expert) to disrupt the guardrail's magic, or dispel magic (3rd rank; counteract DC 24) to counteract the guardrail.

The guardrail is its own object: Guardrail Hardness 13; Guardrail HP 56 (BT 28).

Spray Acid [Reaction] (acid, arcane)

Routine (1 action) On its initiative, the trap continues to spray acid, dealing 2d8+9 acid damage to all living creatures on the stairs (DC 25 basic Reflex save).

Reset The trap automatically deactivates after 1 minute. It resets in 1 hour.

Level 6 · Complexity Complex

Stealth +10 (trained)

Disable

• Arcana DC 26 (expert) — (expert) to deactivate the trap’s sensors, or Arcana
• DC 24 (expert) — (expert) to disrupt the guardrail’s magic, or dispel magic (3rd rank; counteract
• DC 24

AC 21

HP 56 · Hardness 13

Immunities critical hits, object immunities, precision damage

Trigger A creature steps on the south stairs

Effect The guardrail sprays flesh-eating acid, filling the entire stairwell. All living creatures on the stairs area take 2d8+9 acid damage (DC 27 basic Reflex save). The trap then rolls initiative.

Reset The trap automatically deactivates after 1 minute. It resets in 1 hour.