This Effect is Quick, visual, & MindBlowing Best for Online shows, for your instFeed, or to show up your talent on social media. It is very easy to perform, In effect, the magician shows a blue color card from the front and back, now he holds the blue back in front and just moves his other hand over the card amazingly, 1/3rdportion of blue back changes to red. now again with a simple shake another 1/3rdportion of blue color change to red, finally the whole card get a change to red back card, you can show card freely from the front and back at the end. No thread work, No Sliding parts, No Magnets The durable gimmick in Bicycle cards. comes with a small video tutorial link. Available in two combinations. Red to Blue and Blue to Red