A topic from AEG's L5R CCG Rules forum, copied for Oracle of the Void from a copy of the forum saved in October 2015, so pages it didn't save are missing. Players' names are left out; the rules officials are named. Rulings are as they stood on these dates; later rulings, the rulebooks and the Rules Archive may differ.
A player, 30 July 2007
First the appropriate card text:
Rosoku's Staff
+2 Force + 2 Chi 4 Gold 4 Focus Weapon • Unique Reaction: After you put a Ring into play from your hand by its own text, if you now control exactly one Ring, destroy this card: Search your Fate deck and hand for a Ring. Put it into play.
Ok, so if i have one ring i put into play by its own text, and then go put a second into play using the staff does it count for enlightenment or will the staff only fetch the ring and "cheese" it into play not counting it for enlightenment?
Thanks!
Martin Lund (rules official), 30 July 2007
A player wins immediately through an Enlightenment Victory when he or she has in play five Ring cards, each with a different element keyword, and each of which last entered play by its own text (as opposed to other effects that can put a Ring into play).
Since the Ring enters play due to the text of Rosoku's Staff, not the Ring itself, it won't help you achieve Enlightenment.
For more information, look here.