The players encounter a pit. At the bottom of the pit is a pile of gold. Above the pit are spikes on the ceiling and a rope tied to them dangles down to the gold. The pit has reverse gravity on it and the rope has it as well making it appear to hang properly. Any player who uses the rope will fall upwards onto the spike and take 2d6 piercing damage. The gold at the bottom is an illusion. The players must jump across the gap.