The Grey Tide does not only take. It also brings.
It rises from another world, and when it ebbs it leaves that world's legends on the shore: Hannibal, who led elephants over snowy mountains; Caesar, who crossed the Rubicon; Guan Yu, who slew a champion before his wine went cold; Zhuge Liang with his feather fan; Joan, who carried her banner into the flames… They wander the Realm, weighing every lord who plants a banner; and each time the tide pulls back and the Realm enters a new age, more of them awaken.
A legend follows only a lord whose renown is great enough. Renown is earned: win a battle, hold a city, sweep away a camp, lead your people into a new age, and your name is sung a little farther. The more famous the legend, the more renown they ask; and keeping a legend in your service costs good, solid gold.
The larger your town hall, the more legends it can host. They will lead your armies or hold your city — and when your paths part, you may send them on their way.