Trap Generator
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Flooded Corridor
A lever is rigged to activate when pulled that causes the dam farther up the corridor to break and unleashes a huge wave of water that crashes down the corridor. The room is wet with a small river running through it.
Effect: Initiative +1, moves 60 ft. in a straight line each turn. If it enters another creature's space, DC 11 DEX save or washed away by the rapid waters and smashed against the walls for 10 (1d10) bludgeoning damage
Trigger: lever, activates when the wrong lever is pulled.
Countermeasures: A successful DC 15 Intelligence (Investigation) check allows a character to deduce the trap's presence. A successful DC 15 Dexterity check using thieves' tools disarms the trap, disabling the trigger. Unsuccessfully attempting to pick it triggers the trap. Climbing the walls, running away to higher ground before the water reaches them, or securely anchoring themselves will prevent the water from washing them away.
Sword Burst Trap
A denizen of the lair is hiding nearby out of sight watching for intruders to enter the trap's radius. When a hostile creature is spotted, the sentry pulls on a rope that releases the spell stored within the trapped object. The object is covered in arcane symbols and writing.
Effect: +4 to hit (or DC 11) against one target, Casts Sword Burst centered on the triggerer
Trigger: sentry, a sentry is hidden in a hole or around a corner with a rope that activates the trap when pulled.
Countermeasures: The sentry is a regular denizen of the dungeon, stealthed in a nearby hiding spot. A successful DC 15 Wisdom (Perception) check spots the sentry, and the sentry will activate the trap when they see enemies standing within range of it. Disabling, avoiding, or scaring off the sentry will render the trap harmless. Casting dispel magic (DC 11) on the trap will cancel the stored spell.
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) | 6 (1d6) | 12 (3d6) |
| Medium (barrel, chandelier) | 4 (1d8) | 22 (4d8) |
| Large (cart, 10x10 ft. window) | 3 (1d10) | 27 (5d10) |
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