A useful NetHack scroll. When read, the uncursed version will add 1 point of enchantment (one "plus") to and uncurse one random item of armor you are wearing. The blessed version adds +1 to +3 and blesses 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.