Trap Generator
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Brimstone Floor
An enemy in disguise asks for help and triggers the trap when the PCs get close, which makes flaming coals and brimstone fall through small slots in the walls and cover the floor. Bits of ash and charcoal litter the area.
Effect: Targets all creatures within a 10 ft. square area, flaming coals and brimstone fall into the area and cover the floor. Any target that starts or moves through the area takes 3 (1d10) fire damage per turn.
Trigger: enemy, an enemy in disguise asks for help.
Countermeasures: A successful DC 10 Insight check can tell that the enemy is lying. A successful DC 10 Dexterity check using thieves' tools disarms the trap. Enough water to cover the area will douse the flames and make the coals safe to cross.
Steam Trap
A door is trapped and either has buttons or holes to fit a weapon that produce a note, or requires an instrument to be played before it. If the wrong tune is played before opening the door then the trap is triggered, which 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 1 (1d10) fire damage per turn.
Trigger: musical tune, a musical tune can be heard elsewhere in the dungeon, and the tune must be repeated at a door or similar to disable the trap.
Countermeasures: A successful DC 10 Intelligence (Investigation) check allows a character to figure out that the lock requires a specific tune. A successful DC 10 Performance check can recall and play the tune if the character heard it. A successful dispel magic (DC 10) cast on the eye disables the trap. An unsuccessful check 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) | 1 (1d4) | 5 (2d4) |
| Small (chest, lute) | 4 (1d6) | 14 (3d6) |
| Medium (barrel, chandelier) | 4 (1d8) | 12 (4d8) |
| Large (cart, 10x10 ft. window) | 6 (1d10) | 27 (5d10) |
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Their contribution stands as a beacon of hope for all adventurers!
