trick

The trick is to make sure you don't die waiting for prosperity to come.

   "Sometimes if a trick is done properly, it can be better than magic.  In fact, I would go so far as to say a good trick is real magic."
   "But still, it was just a trick."
   The wizard held up a finger, "Results, Richard.  That's what counts.  Your way, those men would have all lost their heads." 

The greatest trick the devil ever pulled was convincing the world he didn't exist.