In Frank Herbert's novel Dune, a ghola is a postmortem clone with all the memories, abilities and skills of his previous lives. How can a Magi become a ghola?
What hermetic breakthroughs are needed? How do we organize the research? And finally, how to define that in terms of rules?
The reasoning of the Magi is that he does not want to become immortal outside the cycle, but to be reborn for a new cycle while retaining what he was before.