Choose your faction. Command your destiny. The gods are watching. The Xirkaali Empire has arrived - and the world trembles as their forces surge across land and sea, the western powers face an enemy unlike any before. But in the chaos, old powers stir… and new opportunities rise. Invasion is an expansion rulebook for Kings of War 4th Edition. Contains Army List for the Xirkaali Empire, Trident Realm, Halflings, and Salamanders.