Kerkerkruip: Tome of Law too cryptic?

I just tried out the Tome of law, completely failing to understand what it does.

[spoiler]When you read it, it gives you a number. I thought maybe it was a page number, perhaps a default response for reading Tomes and I wasn’t actually getting any real effect. Then I thought maybe it was the number of turns until Nomos would tell me to attack.

I had to read the source to find out what it really does. It actually fixes all attack rolls to the number that you read. If you read it again, it will change all attack rolls again. Pretty cool! But I wonder if maybe it should explain a little bit more. Here are two options:

What do you think?