Here’s another visit with an old packet trick. It’s Sympathetic Cards by Ronnay, that was put out by Emerson and West. The trick is a “follow the leader” effect where two packets keep matching when one is turned face up or face down, then there’s a couple of kickers with jokers appearing and backs changing colors.
The problem with the trick as written is you end up with two more cards than you start with.  It’s a small problem, but also something that I feel needs to be addressed.  However there’s a lot of magic that happens in it and it’s pretty good magic, so it’s not a bad trick…
If I was to improve it, the main thing I would do is try to figure out a way to get rid of the two extra cards.  Other than that, it’s pretty good. 
-Louie
