Factions or the Emissary Council are embassy buildings belonging to other races that you can build in your city. Constructing will give you access to powerful new non-human units, like the hulking Ragnar Goliaths, or the powerful ranged Unak Grenadiers.
As you progress through the Campaign, additional Emissary Council buildings will become available.
The Unak Citadel, the Mossmane Cairn, the Elithen Palace, the Ragnar Keep, and the Asgardian Hall. These buildings unlock at various Castles Levels.
- Unak Grenadiers become available at Castle LVL. 6
- Mossmane Panthers become available at Castle LVL. 8
- Elithen Pikemen become available at Castle LVL. 10
- Ragnar Goliaths become available at Castle LVL. 12