Trap Generator
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Swinging Battering Ram
This trap uses a trip wire that makes the trap swing out from a hole in the ceiling, toppling anyone in its path. There's large holes in the ceiling.
Effect: Targets all creatures within a 10 ft. square area, DC 18 DEX save or take 57 (10d10) damage and be knocked prone
Trigger: trip wire, activates when wire is tripped.
Countermeasures: A successful DC 20 Wisdom (Perception) check will spot the trip wire, and a DC 20 Dexterity check using thieves' tools disables the trip wire 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.
Investiture of Wind Trap
A door knocker is part of a mechanism that triggers when the knocker is rotated and releases the spell stored within the trapped object. The object is covered in arcane symbols and writing.
Effect: +10 to hit against one target, Casts Investiture of Wind centered on the trigger with DC 18 (if relevant)
Trigger: knocker, activates when the knocker on a locked door is used.
Countermeasures: A successful DC 20 Intelligence (Investigation) check allows a character to deduce the trap's presence. A successful DC 20 Dexterity check using thieves' tools disarms the trap, disabling the trigger. Unsuccessfully attempting to modify it triggers the trap.
Casting dispel magic (DC 20) 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) | 4 (1d4) | 3 (2d4) |
| Small (chest, lute) | 2 (1d6) | 8 (3d6) |
| Medium (barrel, chandelier) | 8 (1d8) | 25 (4d8) |
| Large (cart, 10x10 ft. window) | 1 (1d10) | 31 (5d10) |
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