Thanks for the leads, re: "Devil's Elevator".
It appears that we might be talking about two different routines, as the title "Satan Deals Again" sounds like a "sequel" to something previous -- possibly the original "Devil's Elevator"?
Re: HOW to present this trick. I used to save it for those times when I'd encounter the inevitable question about card cheating from someone AFTER I'd done some straight magic. I'd offer to take the spectator into my confidence and show them a little "inside" card mechanic stuff. The great thing is, with this "behind the scenes" presentation (done, by the way, for just one person, ideally) they completely accept that I'm actually doing seconds and Greek bottoms, etc.. (The psychology being; why else would I be so "secretive" about it, if it wasn't the real deal.) Lots of fun!