Trap Generator
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Plant Growth Trap
This trap has a cover constructed from material identical to the floor around it that releases the spell stored within the trapped object. The object is covered in arcane symbols and writing.
Effect: +8 to hit against one target, Casts Plant Growth centered on the trigger with DC 17 (if relevant)
Trigger: false floor, activates when a creature steps on the false floor and drops into the trap.
Countermeasures: Once the trap is detected with a successful DC 15 Wisdom (Perception) check, an iron spike or similar object can be wedged between the cover and the surrounding floor in such a way as to prevent the cover from opening, thereby making it safe to cross. The cover can also be magically held shut using the arcane lock spell or similar magic.
Casting dispel magic (DC 15) on the trap will cancel the stored spell.Hunger of Hadar Trap
A rope is attached to a mechanism in the ceiling. The rope is knotted and situated below a ledge or trapdoor, making it look like the rope needs to be climbed or pulled to continue. In reality the trap is triggered when the rope is pulled, which releases the spell stored within the trapped object. The object is covered in arcane symbols and writing.
Effect: +8 to hit against one target, Casts Hunger of Hadar centered on the trigger with DC 17 (if relevant)
Trigger: pull rope, a knotted rope leading to a ledge above activates the trap when pulled.
Countermeasures: A successful DC 15 Intelligence (Investigation) check at the top of the rope will find the mechanism that activates when the rope is pulled. A successful DC 15 Dexterity check using thieves' tools disarms the trap, rendering the pull rope harmless. Since it may be difficult for characters to reach the top of the rope without pulling it, the ledge it leads to should be optional or have an alternate safe route to reach.
Casting dispel magic (DC 15) 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) | 3 (1d4) | 7 (2d4) |
| Small (chest, lute) | 5 (1d6) | 15 (3d6) |
| Medium (barrel, chandelier) | 4 (1d8) | 23 (4d8) |
| Large (cart, 10x10 ft. window) | 8 (1d10) | 24 (5d10) |
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