The Progressive Book Test | Michael O'Brien (1984) Fox 4x4 Color Change: (This is

4x4 Color Change: (This is Shin's favorite way to change four cards out at a time

is elsewhere

And all this in VIEW of course

And if that's not enough

The Progressive Book Test | Michael O'Brien (1984) Fox 4x4 Color Change: (This isMy absolute favorite mind reading tool is the Book Test. A Book Test is a special prop disguised as an ordinary book that allows you to read a spectator's mind. With so many of these on the market, how can you possibly know which version of this prop to choose? For me, It all comes down to three simple things: Is it easy to use? Do I need to memorize anything? Does it have multiple uses? So let's talk about the Progressive Book Test! Is it easy to