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Old Murder HolesHazard 3

Uncommon Mechanical Trap 
Source They Hunger Below pg. 45
Complexity Simple
Stealth DC 20 (trained)
Description Several dozen spear holes line the sides of the cavern walls, triggered by a false stone in the partially paved surface of the cavern floor. However, most of the spears used to arm the trap are broken and long forgotten on the dusty cavern floor.
Disable DC 20 Thievery (trained) to deactivate the trigger on the floor, or DC 23 Athletics to pry up the floor plate to dislodge it from the trigger.
Spear Launcher [reaction] Trigger Downward pressure (such as by a footstep) is applied to the false stone; Effect The trap shoots several spears, making an attack against the triggering creature or object on the stone. Ranged spear volley +16, Damage 2d10+13 piercing

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