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.
utaku plains's trait says: Your Personalities have +1 PH and a maximum Personal Honor of 5 while in play.
does that mean that i can gain 4 honor for paying the printed gold cost of a unicorn personality x with 3 personal honor, while fulfilling his honor requirement?
If he has not already gained Honor this way this turn, gain Honor equal to the Personality's Personal Honor just before he enters play (also known as "buying for Honor"). The Honor gain is for the Personality entering play, and if anything causes the Personality not to enter play, the Honor gain does not happen.
Honor gain occurs before the personality is in play. Utaku Plains will not affect that honor gain.