L5R LCG: Peace at Any Cost Dynasty Pack - Rules of Play says:
As with earlier Dynasty Packs of this cycle, this expansion provides a bevy of new tools for each Great Clan. Several clans receive new ways to manipulate fate on individual characters—on both their own characters and their opponents’—as well as ways to respond to their opponents doing the same. With a new stronghold, two new provinces, and a full array of dynasty and conflict cards, Peace at Any Cost is a must-have for any player!