Punji Stake Field
Punching into the surface of the area are little holes with downward pointing wooden spikes concealed just inside, the openings big enough and in just the right places for Small- or Medium-sized creatures to step into them.
Punji Stakes. When a creature steps into the hole it makes a Dexterity saving throw . On a failure the trap catches the creature’s leg and restrains it, dealing 5 (2d4) piercing damage each time it attempts to move or when a check made to free it fails by 5 or more. Escaping the trap requires an Acrobatics or Athletics check.
Trap. This trap can be detected by a passive Perception of 15 to notice a covering of leaves concealing wooden spikes beneath. If the trap is not detected, it automatically triggers a critical failure.
A group Investigation check is made to safely move around the hidden foot-sized pits. Alternatively, a sufficiently strong gust of wind can move the concealing leaves, or slowed movement using an object to disperse the leaves reveals where these holes are located.
Critical Failure: Each adventurer steps into punji stakes. On a failed saving throw they suffer a wound that deals 2 (1d4) ongoing piercing damage until they regain hit points or an action is spent making a Medicine check.
Failure: Each adventurer that failed steps into punji stakes.
Success: The adventurer evades the punji stakes.
Critical Success: The party evades the punji stakes. Roll on the Boons and Discoveries table (page 196 in Trials & Treasures).