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, 31 July 2010
How does the interaction between Kazuki's open ability (Open: Set a target Personality's Force equal to Kazuki's.) and Tsukimi's trait (Your Samurai at Tsukimi's location have a Force bonus equal to the highest Chi of any Shugenja you control.) work?
Let's say I control both of them and a chi 3 shugenja. If I use Kazuki's ability on either of himself or Tsukimi does their force become 8 (Kazuki's base 5 plus 3 for the shugenja's chi) or 11 (Kazuki's base current force before the ability is used plus an addition three from the shugenja.)?
Thanks
Brook Cunningham (rules official), 31 July 2010
How does the interaction between Kazuki's open ability (Open: Set a target Personality's Force equal to Kazuki's.) and Tsukimi's trait (Your Samurai at Tsukimi's location have a Force bonus equal to the highest Chi of any Shugenja you control.) work?
Let's say I control both of them and a chi 3 shugenja. If I use Kazuki's ability on either of himself or Tsukimi does their force become 8 (Kazuki's base 5 plus 3 for the shugenja's chi) or 11 (Kazuki's base current force before the ability is used plus an addition three from the shugenja.)?
Thanks
In your scenario, after using Kazuki's ability on any Samurai target, the target's Force would be 8.
Tsukimi's continuous bonus, or any pre-existing bonus, is not re-added after changing someone's current Force. It is factored into the change beforehand. "Setting" to a value is just giving a new appropriate bonus or penalty in order to reach the value. Let's say you target a Samurai with a base 3F with Kazuki's ability in your example. The Samurai's current Force before that is 6F (3F + 3F from Tsukimi's trait). Kazuki's ability would then give him +2F, in order for his Force to become 8 and match Kazuki.