Trap Generator
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Chain Flail
A phrase etched on a wall is enchanted to trigger when read aloud, which causes large flails to swing
Effect: Initiative +4, 1 attack per round, +6 to hit against all targets within 5 ft., 5 (2d10) bludgeoning damage and knocked prone
Trigger: forbidden phrase, activates when etched runes are read aloud.
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 phrase. A successful dispel magic (DC 13) cast on the phrase destroys the trap.
Acid Fog Trap
A pedestal with a button labeled 'Do Not Press' (or similar) sits in the center of the area. Creatures that push the button trigger the trap which causes hidden pipes to spew out an acid fog, obscuring the area and burning anyone inside.
Effect: Targets all creatures within a 10 ft. square area, heavily obscures sight and each turn in the fog deals 10 (2d10) acid damage
Trigger: button, a button labeled 'Do Not Press' (or similar) activates the trap when pushed.
Countermeasures: A successful DC 20 Dexterity check using thieves' tools disarms the trap, removing the trigger from the button and allowing it to be pressed as many times as you want. Unsuccessfully attempting to modify the button triggers the trap. Alternatively a creature may be able to build up the incredible willpower necessary to resist the temptation to push it.
A strong gust of wind (at least 10mph) will disperse the fog.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) | 5 (2d4) |
| Small (chest, lute) | 4 (1d6) | 7 (3d6) |
| Medium (barrel, chandelier) | 8 (1d8) | 24 (4d8) |
| Large (cart, 10x10 ft. window) | 7 (1d10) | 27 (5d10) |
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