Do you control cards that have entered play and have been discarded?
Control of Discarded Cards
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.
Do you control cards that have entered play and have been discarded?
No.
Only cards that are in play are "controlled". Cards that ar out of play are only "owned".