As a Spell
Spiked Pit
Conjuration [earth]
Level 3 (exotic)
This spell functions as create pit, except that the pit is lined with wickedly sharp spikes along its bottom and walls and has a maximum depth of 50 feet. Creatures who fall into the pit take falling damage as normal, plus 2d6 points of piercing damage from the spikes. Any creature or object coming into contact with the spikes along the walls, such as a creature trying to climb out, or rope or other typical aids to climbing, takes 1d6 points of piercing damage each round they are in contact with the walls. For those willing to accept the damage incurred while climbing, the pit’s walls have a Athletics DC of 20.
As a Trap
Spiked Pit (CR 3)
Effect 3d8 ‘fall and spikes’, Reflex DC 15 avoids; Trigger location; Reset manual; Perception 16; Disable Device 16