Dune expansion containing two new houses: House Ecaz is ruled by Archduke Armand Ecaz, who is well respected in the Landsraad and keen to strengthen his standing by forging lasting alliances. House Moritani: Led by the ruthless and cunning Viscount Hundro Moritani, the Moritanis did not hesitate to use terror tactics to conquer their enemies, resorting to assassination, sneak attacks, and sabotage.