Trap Generator
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Poison Needle
This trap is activated when a creature touches its surface, which causes the needle to spring out, delivering a dose of poison. The object has a foul odor.
Effect: Targets any creature that touches it, Placed in lock or opening mechanism, dealing 4 (1d10) poison damage and DC 11 CON save or be poisoned for 1 hour.
Trigger: touch trigger, activates when surface is touched by a creature.
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 surface. A successful dispel magic (DC 11) cast on the surface destroys the trap. Destroying the mechanism will prevent the trap from triggering but also render the object unopenable.
Falling Gate
This trap has a cover constructed from material identical to the floor around it that makes an iron gate drop from the ceiling some distance behind, blocking the exit. The floor is cracked and damaged.
Effect: Targets all creatures within a 10 ft. square area, An iron gate drops from the ceiling some distance behind the trigger, blocking the exit. Any target underneath the gate makes a DC 11 DEX save or takes 8 (1d10) 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. The gate can be destroyed with an AC and HP based on its material (see destroying traps below).
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) | 3 (1d4) | 7 (2d4) |
| Small (chest, lute) | 4 (1d6) | 8 (3d6) |
| Medium (barrel, chandelier) | 2 (1d8) | 20 (4d8) |
| Large (cart, 10x10 ft. window) | 5 (1d10) | 24 (5d10) |
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