May I use Smoke and Mirrors instead of focusing ability when using it in conjunction with Tsuma Dojo.
Could Chee'trr use its reaction if it was in a discard pile as well?
Smoke and Mirrors and Tsuma Dojo
A topic from AEG's L5R CCG Rules forum, copied for Oracle of the Void from the Wayback Machine (its copy), so posts 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.
May I use Smoke and Mirrors instead of focusing ability when using it in conjunction with Tsuma Dojo.
This sentence is vague. I'm guessing you want to pull Smoke and Mirrors of of the discard pile then use its ability. No. Tsuma Dojo tells you what you can do with the targeted card -- "use an action printed on it" isn't one.
Could Chee'trr use its reaction if it was in a discard pile as well?
No.