Ringing a blessed or uncursed bell wakes monsters and calls pets. A cursed bell, however, has a 1/4 chance of summoning a nymph (she won't be carrying any items), assuming none of the nymphs are genocided or extinct. If a nymph is summoned, the bell has a 7% chance of breaking (the Bell of Opening never breaks). If the bell doesn't break, then with equal probability:
- there may be no effect;
- the summoned nymph may be fast; or
- the player will be paralysed for 2 turns.