It doesn't matter who he picks. They always have the same qualities. Courageous to a fault, idealistic, gullible. They get led down the path Zoss wants, triumphs, goes to take the seat of Heaven... and it all resets. IIRC, Jaggy believes there are some things that happen in the interim, but nobody remembers those details.
Ah, had time to remember and look up the page in question