Trap Generator
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Grinder Trap
An area is warded against unrecognized intruders, activating when a creature enters without the correct badge, outfit, etc. Entering without the item on their person, 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 19 (2d10) damage on a failed DC 14 DEX save.
Trigger: entry, activates when a creature enters the area without the correct badge, outfit, etc.
Countermeasures: A spell or other effect that can sense the presence of magic, such as detect magic, reveals an aura of divination magic around the area. A successful dispel magic (DC 14) cast on the area destroys the trap.
Swinging Spike Wall
A barricade is holding back the trap and breaking it open causes the trap to trigger, which makes a spike-covered wall suddenly swing across the target area, impaling anyone caught by it. The walls are covered in stained spikes.
Effect: Targets all creatures within a 10 ft. square area, a spike-covered wall quickly swings out and impales targets, DC 14 DEX save or take 15 (2d10) piercing damage.
Trigger: barricade, a barricade is holding back the trap.
Countermeasures: Leaving the barricade alone avoids the trap.
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) | 5 (2d4) |
| Small (chest, lute) | 2 (1d6) | 6 (3d6) |
| Medium (barrel, chandelier) | 8 (1d8) | 16 (4d8) |
| Large (cart, 10x10 ft. window) | 1 (1d10) | 16 (5d10) |
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