Nymphs are tiny (less than 3") winged humanoids. Except from flying with their miniature wings and darting about the air, they can also teleport in a little puff of smoke.
Some are employed by the Frobozz Magic Messenger Nymph Bureau and work as messengers, summoned by a relevant magic spell. Upon appearing they inquire about the recipient of the message, and then the message itself which can't exceed 10 words.
Bivotar and Juranda summoned such a nymph to ask for the help of Syovar to rescue them from Grawl's dungeon.