Trap Generator
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Swinging Log
This trap uses a trip wire that 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 15 DEX save or take 24 (4d10) damage and be knocked prone
Trigger: trip wire, activates when wire is tripped.
Countermeasures: A successful DC 20 Wisdom (Perception) check will spot the trip wire, and a DC 15 Dexterity check using thieves' tools disables the trip wire harmlessly. A character without thieves' tools can attempt this check with disadvantage using any edged weapon or edged tool. On a failed check, the trap triggers.
Box of Brown Mold
This trap uses a trip wire that opens a box containing dangerous mold that immediately attacks. There's a small box next to the trigger.
Effect: Targets all creatures within 5 ft., DC 15 CON save or take 18 (4d10) poison damage and be poisoned for 2 hours
Trigger: trip wire, activates when wire is tripped.
Countermeasures: A successful DC 20 Wisdom (Perception) check will spot the trip wire, and a DC 15 Dexterity check using thieves' tools disables the trip wire harmlessly. A character without thieves' tools can attempt this check with disadvantage using any edged weapon or edged tool. On a failed check, the trap triggers. Cold damage can destroy the mold, rendering the trap harmless.
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) | 4 (2d4) |
| Small (chest, lute) | 3 (1d6) | 10 (3d6) |
| Medium (barrel, chandelier) | 1 (1d8) | 19 (4d8) |
| Large (cart, 10x10 ft. window) | 10 (1d10) | 24 (5d10) |
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