Vetrise had sought to by various means and hypothesis how the Penumbra lost their complete forms and how to regain them. As her mother had believed it was connected to the blood, so the quality, heredity were considered. If purity of blood was of import then it would stand to reason how best to reproduce the best results. At the same time, Ilinca was also studying body modification or what she termed "revamping". Through this research and physiological studies, they crossed the two endeavors and developed an enchantment that altered the female organ into that of a male or the approximate thereof, as it lacked testes. Trials were carried out for several weeks to test proficiency and possibility of reaching reproduction without one possessing no Arcturus blood.