From publisher blurb: Have you ever looked at a creature and thought, "hmm, that would be interesting to play"? Have you thought it a shame that some creatures look like you could walk down the street in your game as one yet there are no hard rules on how to do that? Well the Liber Genus series aims to fill that niche. This seventh installment brings the mathematical axiomites to the table, with rules on how to create a character as an ancestry. Incorporating 3 heritages focusing on particular rigid professions as well as 12 ancestry feats and 1 magical item.