Trying to find the name of a book with a mysterious provocateur with multiple identities that is trying to change the establishment. Set in a future with cloning, near magical technology and a almost a "theme" society. Something makes me think Roger Zelazany wrote it, but I have not been able to identify it for sure. I think that near the end the mystery man finally boards a space ship and leaves the planet, but this part may have been in middle with a return to the planet later. I remember multiple clones or at least identities (one after the other). Any ideas? Read this in the early 80's.