You were kind of bored and thought since you were 3. Turn on the tv and watch cartoons. Since the last time you watched tv was when you saw the news about the book of beasts. So you turned on the news which was lucky as there was news reports similar to the bank robbery. Which could only mean one thing. Another book was find.
Considering you had the book of time and beast. While Ruby had the book of Myth and Arcane. That meant only two books were left in play. Book of mind and transmutation.
"Maybe if its a book of transmutation. I can use to give me clothes that fit." you think
Before going out, you watch to figure out which book it is. Maybe one book will be better to use. After watching the news. You deduce the book causing havoc was the book of...