After the Creation, the cruel god Moloch rebelled against the authority of Marduk the Creator. Moloch stole from Marduk the most powerful of all the artifacts of the gods, the Amulet of Yendor, and he hid it in the dark cavities of Gehennom, the Under World, where he now lurks, and bides his time.
You fall into a pit! How pitiful. Isn't that the pits? You land on a set of sharp iron spikes! --More-- The spikes were poisoned! The poison was deadly... --More-- Do you want your possessions identified?"
Upon falling into a pit, if the character is polymorphed into a pit fiend or pit viper, has lost poison resistance, and is wearing an amulet of unchanging.