Rating: WORTHY!
Written by Taylor and illustrated by Boot, this book seems designed to endlessly entertain. The deal is that there's a hidden unicorn on each page that can only be discovered by 'painting' the page with water! Once the water dries, the magical unicorn disappears, and so it remains to be discovered again next time. Each illustration contains a clue as to what to look for.
It seems to me that a book like this will not only be magical to a child, but will encourage confidence and perhaps draw-out (so to speak!) a budding artist. Yes, I'm coloring up after such a bad pun. I commend this one as a worthy read.