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.
If I am the defender and have Isawa Amihiko in my army, can I play Sneak Attack and force my opponent to play an action or pass?
Isawa Amihiko
Earth Interrupt: If the action is an Attacker's Battle action taken before the Defender's first opportunity to act or pass, discard a card to negate its effects, and gain 2 Honor if the card was a Spell.
Sneak Attack
Engage: The Attacker has the first opportunity to take a Battle action or pass in this battle.
If I am the defender and have Isawa Amihiko in my army, can I play Sneak Attack and force my opponent to play an action or pass?
Isawa Amihiko
Sneak Attack
Sure you can! CCCCombo!