sinful vapor
If your about to draw a card you can see if it has a unique design or shape, glass is most obvious and you should beable to see where most glass cards are in your deck by looking at the deck (they stand out you know), lucky you can see if your about to draw one if you pay atention the the frayed edges, glass you can also see if its on top of deck what suit (gray symbles where suit numbers are) and what rank (gray backwards number or design)