About Jacob Oniricus

Books, editorial approach and the purpose of this website.

Jacob Oniricus is the author identity behind the Black Books collection and Atlante Celeste Tarot. This site connects the books with guides to symbols, reading and tools for reflective study.

Our editorial approach

We distinguish selection advice from hands-on testing. Product availability and specifications can change; check the current seller listing. Affiliate commissions may support the site. We do not publish invented ratings, testing results or guaranteed outcomes.