Trap Generator
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Grinder Trap
A barricade is holding back the trap and breaking it open causes the trap to trigger, which opens the walls, revealing two large mechanical grinders that close in and grind up anyone caught inside. The walls are made up of tall slatted panels.
Effect: Targets all creatures within a 10 ft. square area, grinders emerge from the wall dealing 22 (4d10) damage on a failed DC 15 DEX save.
Trigger: barricade, a barricade is holding back the trap.
Countermeasures: Leaving the barricade alone avoids the trap.
False Stairs with a spike pit
A door is locked and the wall next to it has a number of holes with rods inside. Only one rod opens the door, the rest trigger the trap that causes the stairs to fold in and create a perfectly smooth slide. Creatures on the stairs will fall and slide rapidly to the bottom. The walls are smooth with nothing attached to them.
Effect: Targets all creatures on it, steep stairs become a slick slide, causing targets to fall and take 14 (4d10) damage and be knocked prone
Trigger: rods in holes, activates when the wrong rod is touched.
Countermeasures: A successful DC 15 Intelligence (Investigation) check will spot figure out the mechanism, and a DC 15 Dexterity check using thieves' tools disables the trigger harmlessly. On either failed check, the trap triggers.
A web spell or similar can stop creatures from falling down the surface. A set of climbing tools can be used to safely scale the slide.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) | 5 (2d4) |
| Small (chest, lute) | 1 (1d6) | 16 (3d6) |
| Medium (barrel, chandelier) | 5 (1d8) | 21 (4d8) |
| Large (cart, 10x10 ft. window) | 2 (1d10) | 40 (5d10) |
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