Spiked Pit

Standard Action | V, S, F | Medium | 10 ft sq
1 + 1 Round/level | Reflex negates | No
You create a deadly pit with spikes at the bottom (10 ft deep/2 levels, maximum 50 ft). Creatures who fall in the pit take regular falling damage plus 2d6 piercing damage. Any creature who contacts the walls (includes climbing out) takes 1d6 piercing damage each round. The pit's walls have a Climb DC of 20.