Something more dangerous than polymorphing? Yes. With a rare [[scroll of change material]] or a good prayer (see gods), you gain the ability to change a limb into another material. These materials usually have Astr/Lstr multiple times stronger than human flesh, are much harder to damage... and shoot your health sky high. Since the limb is so helpfully hard to remove, and since your life depends on individual body parts rather than your total health, this is a easy way to get screwed.

=Training=