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, 21 March 2012
I performed a series of actions last night in local playgroup that I feel fairly certain is legal, but still felt kind of weird - wanted to double check it before it possibly came up in an official tourney.
I declare an attack, assigning a couple Paragons to a battlefield; my opponent assigns defenders, and I choose to do that battlefield first. As a reaction, I play Grateful Reward on one of my Paragons, attach the follower, gain 2 honor, and draw a card. The card I draw is Sneak Attack. My opponent did not have a reaction to engaging, so I then played the Sneak Attack I just drew as a reaction to engaging. Is that legal? (Like I said, it seems like it, but it feels kinda weird taking a second reaction that I drew as a result of a reaction.)
Brook Cunningham (rules official), 21 March 2012
I performed a series of actions last night in local playgroup that I feel fairly certain is legal, but still felt kind of weird - wanted to double check it before it possibly came up in an official tourney.
I declare an attack, assigning a couple Paragons to a battlefield; my opponent assigns defenders, and I choose to do that battlefield first. As a reaction, I play Grateful Reward on one of my Paragons, attach the follower, gain 2 honor, and draw a card. The card I draw is Sneak Attack. My opponent did not have a reaction to engaging, so I then played the Sneak Attack I just drew as a reaction to engaging. Is that legal? (Like I said, it seems like it, but it feels kinda weird taking a second reaction that I drew as a result of a reaction.)
A little weird, maybe, but totally legal.
The timing window of the start of engagement doesn't "close" until both players pass their opportunity to React to it. You react with Grateful Reward, the other player passes, and lookee! You have another Reaction! No reason you can't play it.
Enjoy the weirdness.