Lumber

Lumber is one of the 5 resources available for gathering. Lumber is collected from Lumber Mills, but can also be collected as round rewards on Elfrath.

Upgrading
Lumber is used for upgrading the following buildings:
 * Sacred Tree
 * Clan Hall
 * Craft Tower
 * Trade Post
 * Farm
 * Henge
 * Mine
 * Temple
 * Barracks
 * House
 * Vault