Wrong Way Nails

The wooden floor here looks old.

Mechanical Trap


The floorboards all sink slightly when walked on, exposing the sharp nails underneath.

A DC 12 Intelligence (Investigation) check notes that there are no nails holding the boards in place. A followup DC 14 Wisdom (Perception) check finds that the boards are littered with small nail holes, that, due to the wood, have swollen shut.

When the floor is stepped on, it depresses about an inch, exposing the nails from underneath. The target must make a DC 14 Dexterity saving throw on each movement action spent on the floor. On a failure, they take 1 hp of piercing damage, and must make a DC 14 Constitution saving throw or become poisoned for 1 day.

Laying down any material at least 1 inch thick over the walking area prevents the nails from striking the target.

Categories: 5e, Dungeons and Dragons, mechanical | Tags: , | Leave a comment

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