In the southernmost reaches of the southernmost lands, among sun-baked golden hills and rocky ruins, the cities of Gor Kull offer travelers and citizens a plethora of sinful concoctions, powders, and draughts, born of a wicked desire to addle the mind and befuddle the eye. Yet, should ye wish to arm oneself with knowledge against such evil brews, I present such guide.
There is a person who has a well-known reputation, probably involving something illegal. But this person is either very clever and crafty, or really like his or her privacy, for no one knows who this person actually is. As an added twist, perhaps this person is of an age that would noramlly be wildly inappropriate (say, a child is a much-feared bandit) or maybe not the expected gender or even race.