2010 · Kaynak kitap (oyunu geliştirmek için kurallar/seçenekler)

Kusa of the Jade Oath

This roleplaying supplement introduces the Kusa, covert agents and mercenaries who serve the Lands of the Jade Oath through espionage, sabotage, infiltration, assassination, and, when necessary, open combat. It includes the Kusa base class, new rules for Ch’i and Chakra feats, and more than 20 additional feats focused on the unorthodox arts of war.