Trap Generator
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False Stairs
A passage is trapped with glowing runes which must be covered or toggled to display a specific password. If the wrong runes are showing then the trap is triggered, which 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 15 (4d10) damage and be knocked prone
Trigger: runes, a surface is covered in glowing runes that can be touched or covered to form specific words, the correct word must be found to stop the trap.
Countermeasures: A successful DC 15 Intelligence (Arcana) check allows a character to figure out that the runes can be toggled or covered to make out different words. A successful dispel magic (DC 14) cast on the eye disables the trap. An unsuccessful check triggers the trap. 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.
Ice Dart Trap
An area is warded with a detect magic spell. When magic is detected within the spell's radius the trap is triggered which causes ice to shoot out. The area is unusually cold, and the walls are perforated or mesh or have exposed piping.
Effect: +11 to hit (or DC 14) against one target, DC 14 DEX save or take 22 (4d10) cold damage
Trigger: magic detection, activates when magic is detected in an area.
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. Destroying the trap will rupture the pipes and spray ice over the area, if fire damage is used the ice will melt and become water.
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) | 8 (2d4) |
| Small (chest, lute) | 5 (1d6) | 9 (3d6) |
| Medium (barrel, chandelier) | 1 (1d8) | 9 (4d8) |
| Large (cart, 10x10 ft. window) | 9 (1d10) | 27 (5d10) |
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