Further to http://www.alderac.com/forum/viewtopic.php?f=59&t=109251&hilit=temple+of+serenity Can I use temple of Serenity if I have a Shugenja at a battle field who is unopposed to just gain the honor? If yes, can I also use it if I have a samurai at the battle (no shugenja) to gain honor?
Temple of Serenity unopposed
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.
Further to http://www.alderac.com/forum/viewtopic.php?f=59&t=109251&hilit=temple+of+serenity Can I use temple of Serenity if I have a Shugenja at a battle field who is unopposed to just gain the honor? If yes, can I also use it if I have a samurai at the battle (no shugenja) to gain honor?
No, you cannot do either of those things.
An "opposed Shugenja" of yours is required targeting of the action. If you can't meet an action's required targeting, you can't take it.