Trap Generator
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Poison Spray Trap
A pillar of light stretches the location. The trap is activated if the beam is broken by a creature or object and releases the spell stored within the trapped object. The object is covered in arcane symbols and writing.
Effect: DC 10 to find, DC 20 to disable
+3 to hit (or DC 12) against one target, Casts Poison Spray centered on the triggerer
Trigger: light beam, a beam of light activates the trap when broken.
Steam Trap
Multiple levers are rigged to activate when pulled that makes scalding hot steam fill the area via vents in the floor. The floor is perforated or mesh.
Effect: Targets all creatures within a 10 ft. square area, scalding hot steam fills the area. Any target that starts or moves through the area takes 4 (1d10) fire damage per turn.
Trigger: multiple levers, activates when the wrong lever is pulled.
Countermeasures: A successful DC 10 Intelligence (Investigation) check allows a character to deduce the trap's presence. A successful DC 20 Dexterity check using thieves' tools disarms the trap, disabling the trigger. Unsuccessfully attempting to pick it triggers the trap. A strong gust of wind (at least 10mph) will disperse the steam.
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) | 2 (1d4) | 4 (2d4) |
| Small (chest, lute) | 4 (1d6) | 8 (3d6) |
| Medium (barrel, chandelier) | 5 (1d8) | 11 (4d8) |
| Large (cart, 10x10 ft. window) | 10 (1d10) | 13 (5d10) |
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