How can I get the book of books？

Null's Clash
1

Anyone know how to get the book of books？

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2

Where did you saw book of books in Null’s Clash?

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3

What!! Do you mean book of books? I don’t think it’s developed yet even on the official game.

4

It’s available in clash royale but I think he wrote wrong topic :no_mouth: or I think he want book of building

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5

Plz send a link of version 14…thanks

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