Bad Form
Bad forms is the name given to the transformations the player character can suffer when affected by a beam of polymorph, a weapon of chaos or a Transmutations miscast effect. Beams can always be resisted with magic resistance if the player didn't zap himself. Mutation resistance doesn't work, but undead players and those already affected by a bad form are immune. Followers of Zin can be protected by their god.
These are all the transmutations that can happen:
- Bat Form : 15.4%
- Fungus Form : 15.4%
- Pig Form : 15.4%
- Porcupine Form : 15.4%
- Tree Form : 15.4%
- Wisp Form : 15.4%
- Spider Form : 3%
- Ice Form : 3%
- Statue Form : 0.77%
- Dragon Form : 0.15%
Transmutations which usually are cancellable, like Ice Form, become uncancellable.
History
Most bad forms were added in 0.12. A jelly form was added (eats items, acidic attack but terrible defenses, no item use), but disabled before the branch for testing bad forms was even merged into trunk, let alone a stable release.