Falling Iron Portcullis
Level 7 Minion Obstacle
When a pressure plate is stepped on, a hidden iron portcullis drops from the ceiling, blocking the hallway.Trap: A portcullis drops into 2 adjacent squares when a 2-square-wide pressure plate is stepped on. A secret panel hides the winch that raises the portcullis.Perception DC 14: The ceiling has a 2-inch-wide slot packed with gray dirt and small stones. DC 19: A portion of the floor gives in when pressed down. It might be a trapdoor or pressure plate. DC 24: A secret panel in the wall beyond the pressure plate hides the winch that raises the portcullis.TriggerA portcullis falls and blocks the passage when a creature steps on a pressure plate.AttackImmediate Reaction Area 2 adjacent squares
Target: Each creature in the areaAttack: +10 vs. ReflexHit: 3d8 + 5 damage, and the target is restrained and falls prone. If the target is already prone, it takes no damage, but its turn ends immediately.Miss: Half damage, and the target is pushed 1 square (roll a d20: 1–10 push forward, 11–20 push back).Countermeasures A character can jump over a single pressure plate square with an Athletics check (DC 6, or DC 11 without a running start).
A character that has found the winch can crank it up with a DC 8 Athletics check.
A character adjacent to the trap can disable the portcullis or pressure plate with a DC 19 Thievery check.
A restrained character can use the escape action (DC 19) to free himself, moving 1 square but remaining prone.
Published in Dungeon Master's Guide 2, page(s) 67, Dungeon Magazine 155, page(s) 85, HS2 Orcs of Stonefang Pass, page(s) 10.