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, 26 October 2012
So my question is with this, Am I able to play Undetectable enemy if my opponent wins a battle via Aramasu's legacy and what would happen as Undetectable enemy negates all effects of the action thats targetting which from my understanding is mantis clan magistrates and attachments not bowing to resolution, the bowing and straighten negation + unresolved battles yet to occur.
Aramasu's Legacy PS/GP/SH 7 4 2 Text Limited: Create an additional Attack Phase, during which battle resolution does not destroy defending armies or provinces and does not bow your Mantis Clan Magistrates or your attachments. After it ends, if you won any of its battles (even against no units at resolution), you may target a Personality or Holding, bow it, and negate its straightening until after your next Straighten Phase ends.
Undetectable Enemy Cost 0 Text Reaction: After another player's action targets your Oni: Negate its effects.
Thanks.
Alex Jones (rules official), 28 October 2012
So my question is with this, Am I able to play Undetectable enemy if my opponent wins a battle via Aramasu's legacy and what would happen as Undetectable enemy negates all effects of the action thats targetting which from my understanding is mantis clan magistrates and attachments not bowing to resolution, the bowing and straighten negation + unresolved battles yet to occur.
Aramasu's Legacy PS/GP/SH 7 4 2 Text Limited: Create an additional Attack Phase, during which battle resolution does not destroy defending armies or provinces and does not bow your Mantis Clan Magistrates or your attachments. After it ends, if you won any of its battles (even against no units at resolution), you may target a Personality or Holding, bow it, and negate its straightening until after your next Straighten Phase ends.
Undetectable Enemy Cost 0 Text Reaction: After another player's action targets your Oni: Negate its effects.
Thanks.
The targeting of the Personality occurs after the Attack Phase created by the action, but all the battles occur during the Attack Phase. When the Personality is targeted, the only outstanding effects of the action are the bowing and the negation of the straightening: these are the only effects negated by Undetectable Enemy.