Hey guys. I've been messin' around with the Brainwave taught in Martini's "The Art of Card Splitting" and I was just wondering...are there any impromptu versions out there? I'm not necessarily looking for a version that involves the whole blue backed/red backed deal (if you know what I mean), but one where a spectator might choose a red card and you show that the rest of the packet are black cards or vice versa?