Ring of polymorph control
As its name suggests, the ring of polymorph control is a ring that grants polymorph control when worn.
If you are wearing (or have eaten) this ring and something causes you to polymorph, then you will be asked "Become what type of monster? [type the name]". You can then choose to polymorph into a monster.
Rings of polymorph control will also allow you to decline a change in form brought upon by lycanthropy.
Polymorph into your own species will cause you to "feel like a new (wo)man!" or whatever species, and cause random change to your scores. There is a chance that this will happen in spite of polymorph control, even if a different monster is chosen.
Limitations of controlled polymorph
Certain monsters are off-limits to polymorph[1]; these include:
- any monster that has been genocided
- all unique monsters
- monsters that exist only so their corpses can exist (plain orc, plain elf)
- a dwarf (though dwarf lord and dwarf king are permitted)
- a gnome (though gnome lord, gnomish wizard and gnome king are permitted)
- an Angel, ki-rin or Archon (couatl and Aleax are permitted)
- a Nazgul
- a human of any kind, including lycanthropes
- a ghost or shade
- a water demon, erinys, mail daemon, djinni or sandestin
- a kraken
- a chameleon
- the "player-monsters" representing failed adventurers in the Astral Plane
Polymorph into your own species is permitted in spite of the above list.
References
- ↑ mondata.h#77; see also monst.c