Trap Generator
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Crushing Walls
This trap has a cover constructed from material identical to the floor around it that causes the walls close in and crush anyone trapped between. There's crushed debris in the middle of the area, and scratches on the floor.
Effect: Targets all creatures within a 10 ft. square area, DC 17 DEX save or take 29 (4d10) bludgeoning damage
Trigger: false floor, activates when a creature steps on the false floor and drops into the trap.
Countermeasures: Once the trap is detected with a successful DC 15 Wisdom (Perception) check, an iron spike or similar object can be wedged between the cover and the surrounding floor in such a way as to prevent the cover from opening, thereby making it safe to cross. The cover can also be magically held shut using the arcane lock spell or similar magic.
A sufficiently strong brace can be bridged between the walls and prevent them from closing. Higher level traps close faster and with greater force.Swinging Battering Ram
A trivially easy riddle etched on a surface is enchanted to trigger when the answer is heard, which makes the trap swing out from a hole in the ceiling, toppling anyone in its path. There's large holes in the ceiling.
Effect: Targets all creatures within a 10 ft. square area, DC 17 DEX save or take 29 (4d10) damage and be knocked prone
Trigger: false riddle, activates when an easy riddle is answered correctly.
Countermeasures: A spell or other effect that can sense the presence of magic, such as detect magic, reveals an aura of divination magic around the riddle. A successful dispel magic (DC 17) cast on the riddle destroys the trap.
Destroying Traps
Traps can be damaged and destroyed, sometimes to good or bad effect. Pipes containing fire or poison will rupture and spray over the area, while mechanisms can be rendered inoperable with enough force. Determine the HP and AC of your traps based on the tables below. Sometimes a fragile trap is more dangerous than a resilient one if destroying it will fill the corridor with acid.
| Substance | AC |
|---|---|
| Cloth, paper, rope | 11 |
| Crystal, glass, ice | 13 |
| Wood, bone | 15 |
| Stone | 17 |
| Iron, steel | 19 |
| Mithral | 21 |
| Adamantine | 23 |
| Size | HP (Fragile) | HP (Resilient) |
|---|---|---|
| Tiny (bottle, lock) | 4 (1d4) | 6 (2d4) |
| Small (chest, lute) | 6 (1d6) | 13 (3d6) |
| Medium (barrel, chandelier) | 5 (1d8) | 20 (4d8) |
| Large (cart, 10x10 ft. window) | 5 (1d10) | 16 (5d10) |
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