Reaction:
Play after an opponent reveals an Event but before it resolves. Discard a card from your leftmost Province. That Event resolves as though it was revealed in your leftmost Province. If discarded or reshuffled, the Event still goes into the opponent's discard pile or deck.
"I killed it myself." -Kihei, ronin swordsman
Gold Edition and Diamond Edition Legal. GenCon 2003 L5R Seminar