This is a bizarre way to ask a question -- there is a long story at play here, so: my apologies. Has anyone here heard of an effect known as "Rainbow Reversal"? I am actually 97% unsure of the very make-up of the trick itself..... I think it uses a 'rainbow' deck....lots of different colors or card backs....but not sure. This is killing me! Can't find a scrap of any mention online!