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.
There is currently a discussion as to if Yajinden Sensei works at all.
By its wording, the Sensei seems to suggest that you cannot recruit anything other than Shadowlands Personalities. This means no holdings or attachments.
Obviously, this would make the game a tad difficult to play if that were the case, so if you could provide clarification on how this works, that would be awesome.
You may only Recruit Shadowlands Personalities.
There is currently a discussion as to if Yajinden Sensei works at all.
By its wording, the Sensei seems to suggest that you cannot recruit anything other than Shadowlands Personalities. This means no holdings or attachments.
Obviously, this would make the game a tad difficult to play if that were the case, so if you could provide clarification on how this works, that would be awesome.
You may Recruit holdings. The Recruit restriction on the Sensei only prevents you from recruiting Personalities who do not have the Shadowlands keyword.
You may not Recruit attachments, as those enter play via the Equip procedure, not the Recruit procedure (in other words, buy attachments as normal).
Technical erratum issued to clarify the wording.