The beautiful Spectrum deck, by Bicycle, with 52 different colored backs, is wonderful for magicians and terrible for card games.
These lovely cards look wonderful fanned out. Flourishes look amazing. The deck is clearly marked and color coded. I thought it might be find to combine with the Si Stebbins stack, a card counting system that Mark has been working with.
The cards are also finished with a “magic finish” that makes them very slick and supposedly last a long time.