A useful NetHack scroll
. When read, the uncursed
version will add 1 point of enchantment
") to and uncurse
one random item
you are wearing. The blessed
version adds +1 to +3 and bless
es a random
piece of worn armor
The cursed version, of course, removes a plus from a random piece of armor and curses it, too.
This enchantment process can fail. If it fails (which has a random chance of happening if you try to go past +7), your armor will evaporate.