Street magic

Magic for the masses, illusions, sleight of hand.  Whatever you call it, it is simply sleight of hand using playing cards, 3 cups and a walnut, etc.  Think of modern day street magicians in Las Vegas.  All tricks, no real magic...but still a good way for a rogue or bard to earn some extra money by tricking the local rubes.

 You use your sleight of hand skill, which you now have expertise in, vs their perception or insight.  If you have a beautiful assistant than they have disadvantage.  Best roll wins, bet to your heart's content