Trap Generator
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Earthmaw Trap
A door or chest is rigged to activate when opened, 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: +7 to hit against one target, 6 (2d10) piercing damage
Trigger: door, activates when a door or chest is opened.
Countermeasures: Spotting the attached wire is a DC 15 Wisdom (Perception) check. A successful DC 15 Dexterity check using thieves' tools breaks the wire attached to the door 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.
Runaway Cart
A door or chest is rigged to activate when opened, which opens a hidden trapdoor in the ceiling, releasing the object that runs down the corridor and tramples anyone in its way. The ceiling is covered in stalactites or vines to conceal it.
Effect: Initiative +3, moves 60 ft. in a straight line each turn. If it enters another creature's space, DC 15 DEX save or take 15 (2d10) bludgeoning damage and knocked prone
Trigger: door, activates when a door or chest is opened.
Countermeasures: Spotting the attached wire is a DC 15 Wisdom (Perception) check. A successful DC 15 Dexterity check using thieves' tools breaks the wire attached to the door 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.
The object stops when it hits a wall or similar barrier. As an action, a creature within 5 feet of it can attempt to slow it down with a DC 15 Strength check. On a successful check, the object's speed is reduced by 15 feet.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) | 3 (1d4) | 3 (2d4) |
| Small (chest, lute) | 1 (1d6) | 6 (3d6) |
| Medium (barrel, chandelier) | 6 (1d8) | 18 (4d8) |
| Large (cart, 10x10 ft. window) | 7 (1d10) | 33 (5d10) |
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