Normally, we're allowed to back our decks in non-standard legal cards. Though Well-Defended Farm is playable in the specific Matter of Honor Lion deck, could I still use it as a deck backer for a constructed deck if that deck is not the Matter of Honor Lion deck?
Can I deck back with Well-Defended Farm?
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.
That's actually a Floor Rules question, I suggest you take it here