If you are not satisfied with any of the available re-positional glues on the market, you may want to consider the Magic Card Wand. This stuff is a dream to work with! 
 
It will hold two playing cards together so you can easily handle them as one. Yet whenever you need to, you can separate the cards easily AND with no "popping" sound!
 
The Magic Card Wand goes on clear and dries in about 2 minutes. Once dry, It can be used to stick (and unstick) playing cards without fear of any sticky residue transferring from card to card.
 
Each Magic Card Wand can be used for hundreds of cards. The possibilities are endless! The Magic Card Wand comes with online video training that covers the following topics: 
 
A Brief History Of Magicians Sticking Cards Together
A Comparison Of Various Products On The Mark
Card Wax
Roughing Spray
3M Sprays
Post-It Spray
Double Sided Tape
Plasti-Dip
Zig 2-Way Pens
Roughing Sticks
Roughing Balms
Science Friction
Re-Positional Glues
Pros & Cons Of Various Products
Introduction To The Magic Card Wand
How To Apply It To Cards (Many Different Ways Explained)
How To Correctly Separate Cards (Several Different Ways Explained)
The Tricks Section
Red Hot Momma
HER Card / HIS Card (Cody’s KILLER Stand Up Version Of Chicago Opener)
The FRED Trick
The ONLY Card That Will Work (Cody’s Stand Up Card Routine For Family Shows)
X Marks The Spot Card Force I Published In 2001 in MUM)
Jean Boucher’s “Dark Card” (Briefly Explained With His Kind Permission)
Geoff Williams Torn & Resotred Card (Briefly Explained With His Kind Permission)