James Randi offers a $1 million dollar prize for anyone who can demonstrate any type of paranormal powers under scientific conditions.
The application and procedures can be found at Randi.org.
Superstition is a paranormal power where the believer gives power to a rabbit's foot, a lucky coin, wearing the same socks, or other item or procedure.
There are ways to test the powers of such things. Unfortunately, or rather fortunately, the is no valid evidence of such powers.
A poker player should rely on his wits, experience, skills, and reads. That lucky coin emits no special powers. It's in your head, and no where else.
Citytom