A round manhole cover is in the middle of the room. It has a hole in it, but there is a stone slab under the hole. |
Mechanical Trap |
The manhole cover must be turned clockwise to open. There are 6 matching holes in the stone, each releases a gout of flame when the hole matches up with the cover.
A DC 14 Wisdom (Perception) check notes small scratches in the stone. A successful follow-up DC 12 Intelligence (Investigation) check reveals that these scratches match up with a small metal block attached to the underside of the cover, suggesting it could trigger something when moved. When the cover is turned, the block hits a small switch on the far side of the hole, which causes a plume of flame to erupt. This plume deals 4d4 fire damage to all targets within 5′, with a DC 14 Dexterity saving throw halving the damage. If the hole is examined, a DC 12 Intelligence (Investigation) check reveals that the metal block push down a small switch on the side of the hole. There are six holes. After the sixth hole. the cover and stone underneath may be removed. The metal may be removed with a DC 16 Dexterity check with thieves’ tools. After the metal is removed, the flames no longer activate. |