Teleportation at Random

Note:
''This is a powerful and most useful spell. It has been used to avoid danger and peril, and legend claims that it has been used on occasion in the exploration of unknown lands. Be warned, however: that which snatches away from one predicament can just as well deposit into another. The spell has been known to leave one where they started. There is one fable that talks about a poor bumpkin who came into possession of such a magic stone. Unprepared to face the dangers of the wilder parts of the world, he rubbed the stone at will, poofing from place to place in search of wine, women, and easy gold. The purveyors of luck were with him for the first few times or so, and the stupid body, whose name was Bob Jack, flitted from town to beach, across mountains and over the seas.''