Sigma Secret Breeding Book

I got Sigma's breeding book with points earned by sending dragons to the Gate of Latea! I thought about aiming for Centura (1600pt), but there's always a chance to get it myself, so I went with the breeding book this time! I tried breeding research right away, but as expected from a 3-attribute species, it's not easy to get them😂 While aiming for Sigma through breeding, I want to work towards max-limit Afrit, Entras, and Centura!!٩( 'ω' )و But before that... First, I need to save up the funds to send dragons to Latea～💸