As the clan that welcomed Portuguese traders and missionaries into Japan, the Otomo gain easy access to modern gunpowder weapons and major bonuses to the spread of Christianity. In addition, their relations with the west enable them to lease land to the Portuguese and raise war-funds with remarkable speed.
The new clan can be pre-ordered through Steam up until the day it's launched on Steam, November 30. It is normally $4.99 (USD) but can be yours for just $4.49 if you pre-order.