A mysterious tome

I hope this is the right forum for this question.

In the capitol of the borderlands preview, #14 in the gazatteer (Ruined Wizard's Tower) the treasure includes a special book.  The book has a stat line [The Obsidian Shards (Format: Codex; Language: Ancient Zaharan; Topics: Alchemy 2, Elementalism (fire); Complexity 5; Length: 600 pages, Reading Time: 4 days, Value: 1900gp, Weight: 2 3/6 st)]

 Does this book give free proficiencies? Enhance existing ones? Is this all Flavor? In other words: What do these stats mean and where can I find this information?

It's from a supplement called Codex & Scroll which is currently available only to Patreon backers who support my AXIOMS e-zine for ACKS ($1 per month).

I will offer the opportunity for KS backers of Secrets of the Nethercity to buy any/all of the AXIOMS content they've missed when I send out the BackerKit.



I couldn't wait; now I'm your patreon.  Or are you mine? How does that work?

Aha, I was wondering what that treasure entry was about. I'll look forward to that backer kit!

You're my patron! Thank you for your patronage :D