Trap Generator
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Earthmaw Trap
An L shaped hallway has doors at both ends. If the door in the short hall is opened then a trap is triggered on stragglers still in the long hall, which causes the floor to open up, spilling the intruder into the trap below. The floor is made up of loose dirt or mud, and there are runes in the area.
Effect: +10 to hit (or DC 13) against one target, 16 (4d10) piercing damage
Trigger: L shaped hallway, an L shaped hallway with doors at both ends that triggers a trap in the long part of the hallway when the door in the hall is opened..
Countermeasures: A successful DC 15 Intelligence (Investigation) check will spot figure out the mechanism, and a DC 20 Dexterity check using thieves' tools disables the trigger harmlessly. On either failed check, the trap triggers.
Heat Metal Trap
This trap is activated when an intruder steps on a hidden pressure plate that releases the spell stored within the trapped object. The object is covered in arcane symbols and writing.
Effect: +10 to hit (or DC 13) against one target, Casts Heat Metal centered on the triggerer
Trigger: pressure plate, activates when 20 or more pounds are placed on it.
Countermeasures: A successful DC 15 Wisdom (Perception) check will spot the pressure plate, and wedging an iron spike or other object under the pressure plate prevents the trap from activating. Casting dispel magic (DC 13) 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) | 4 (1d4) | 6 (2d4) |
| Small (chest, lute) | 1 (1d6) | 6 (3d6) |
| Medium (barrel, chandelier) | 4 (1d8) | 16 (4d8) |
| Large (cart, 10x10 ft. window) | 9 (1d10) | 18 (5d10) |
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