Falling Portcullis Trap

A massive iron portcullis hangs ready in a ceiling slot, waiting for an unwary foot to find the floor trigger — then it crashes down to seal the passage and crush whatever stands beneath it.

Disable DC 27 Thievery (expert) to disable the floor trigger, or DC 27 Athletics or Engineering Lore to jam the portcullis in the ceiling

Slam Shut [Reaction]

Level 7 · Complexity Simple

Stealth DC 22 (expert) — (expert) to spot the sockets in the floor where the portcullis drops; DC 28 (expert) to spot the floor trigger

Disable

• Thievery DC 27 (expert) — to disable the floor trigger
• Athletics DC 27 — or Engineering Lore to jam the portcullis in the ceiling

AC 25

HP 72 · Hardness 18

Immunities critical hits, object immunities, precision damage

Trigger The pressure plate is depressed

Effect The portcullis falls, closing off the hallway. Any creature under the portcullis when it drops takes 4d10+18 piercing damage and is immobilized. A creature that succeeds at a DC 26 Reflex save takes no damage and rolls away in a random direction; on a critical success, they can choose the direction.