So, I recently saw a magician perform some very wonderful magic. He did a particular card trick I had not seen before. Head a spectator name a number, color, shape, and famous person name. He then said he would with the power of suggestion force the spectator to pick a specific card in the deck. Which he did do and then he said he had something in his pocket. An envelope and inside were four cards, with written in sharpie the four picked things above. I hadn't seen one like this before and was quite impressed. Especially if you had read my post before on prediction magic. Has anyone else seen this effect before? Anywhere that I can look into it or the concepts behind it? Or perhaps you need some more detail...