Trap Generator
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Ice Spear Trap
A pedestal with a button sits in the center of the area. Creatures that push the button trigger the trap which causes ice to shoot out
Effect: +8 to hit against one target, DC 15 DEX save or take 17 (4d10) cold damage
Trigger: button, a button activates the trap when pushed.
Countermeasures: A successful DC 20 Dexterity check using thieves' tools disarms the trap, removing the trigger from the button and allowing it to be pressed as many times as you want. Unsuccessfully attempting to modify the button triggers the trap. Alternatively a creature may be able to build up the incredible willpower necessary to resist the temptation to push it.
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.Swinging Battering Ram
A door or chest is rigged to activate when opened, which makes the trap swing out from a hole in the ceiling, toppling anyone in its path.
Effect: Targets all creatures within a 10 ft. square area, DC 15 DEX save or take 17 (4d10) damage and be knocked prone
Trigger: door, activates when a door or chest is opened.
Countermeasures: Spotting the attached wire is a DC 20 Wisdom (Perception) check. A successful DC 20 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.
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) | 1 (1d4) | 5 (2d4) |
| Small (chest, lute) | 2 (1d6) | 13 (3d6) |
| Medium (barrel, chandelier) | 5 (1d8) | 22 (4d8) |
| Large (cart, 10x10 ft. window) | 1 (1d10) | 33 (5d10) |
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