Falling Portcullis Trap
Level 7HazardHazardMediumLegacy
AC
25
HP
72 (BT 36)
Speed
0 ft.
Perception
+0
Fort
+15
Ref
+18
Will
+0
Stealth DC
12
Immunities critical-hits, precision
Recall Knowledge DC 23 (arcana)
Abilities
Slam Shut↺
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.
If the trap was triggered by a creature moving north with a Speed of at least 10 feet, they're considered to be under the portcullis when it
Disable DC 27 thievery (expert) to disable the floor trigger, or DC 27 athletics or DC 27 engineering-lore to jam the portcullis in the ceiling
An iron portcullis drops from the ceiling when a pressure plate is triggered.