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, 25 April 2013
If a card you own is about to enter another player’s deck, it enters your deck instead in the same manner.
Limited: Once per game: Put one to three cards in your hand at the bottom of your deck. Draw cards equal to the number you put at the bottom.
Over the course of the game, I gave my opponent two of my three Hato-Guramas (let's say, thanks to Ikoma Satoru).
He then uses BKexp's ability to put three cards at the bottom of his fate deck to draw three cards.
As two of the three cards he's trying to put away at the bottom of his deck are mine, they'll go at the bottom of my fate deck.
Now, the text on BKexp lets me think that to draw cards, you have to actually put some at the bottom of your deck. Considering they're put at the bottom of another deck, does this affect the number of cards my opponent is allowed to draw.
In other words, in the case I mentionned, will my opponent draw one or three cards?
Brook Cunningham (rules official), 25 April 2013
Over the course of the game, I gave my opponent two of my three Hato-Guramas (let's say, thanks to Ikoma Satoru).
He then uses BKexp's ability to put three cards at the bottom of his fate deck to draw three cards.
As two of the three cards he's trying to put away at the bottom of his deck are mine, they'll go at the bottom of my fate deck.
Now, the text on BKexp lets me think that to draw cards, you have to actually put some at the bottom of your deck. Considering they're put at the bottom of another deck, does this affect the number of cards my opponent is allowed to draw.
In other words, in the case I mentionned, will my opponent draw one or three cards?
He would only draw one.
Although, I would like to point out that this has already been answered before, and that the Search Function of the forum is your friend; the friend that everyone ignores at parties, when they even actually remember to invite him. But still, your friend.