Taichara and Trollsmyth have both posted versions of a magic item called "Wayedge." I don't think I've ever posted a magic item to this blog, but I thought now would be a good time to start. (Dave, at the Tower of the Archmage, was similarly inspired.) Without further introduction:
This slightly curved, elegant steel blade is called Wayedge. Its grip is a striking black, and feels almost like wet, polished stone to the touch. Those who have heard of it claim that it is never found, only won: though the details of the stories vary from teller to teller, and none seem to agree on just who the past weilders of the blade have been, all who speak of Wayedge claim that it always comes as a reward for a test of wisdom. Sometimes, this is an obvious thing—perhaps unravelling a puzzle presented by the sword's current possessor. (In the stories, those who own the blade are often curiously ready to give it away, despite its reputation as an object that makes all tasks easier and all places closer.) Other times, the test is more subtle—it might simply be that the blade is secreted in a place quite difficult to reach, and thus requies some cleverness to gain.
Wayedge is a sword +1 that grants it's weilder a +1 bonus to all saves, and can undo any knot without harming the rope or fiber that forms it. The blade also eases any journey its possessor undertakes in a number of mundane ways: weather turns fairer, most met on the road are friendlier, and often the weilder picks up an uncanny knack for shortcuts. However, whether because of the history of the blade, or on account of some peculiar power, at some point on most longer journeys (and many shorter ones), its weilder will be greeted by someone who seems to recognize the blade but offers only mysterious riddles for conversation. Sometimes this is simply a fellow traveller, who may perhaps offer advice or warning once his riddles have been answered, but more often than most who possess the blade would like these riddles are posed by someone who could present a significant obstacle to the journey.