The Traveling Merchant occasionally sets up shop in a clearing on the eastern side of the map, near the Embassy. He comes and goes when he pleases, each time bringing new wares like Troop Tactics, National Trade Goods, Event Buildings, and more. These trades may cost you Trade Goods, National Trade Goods, or Crowns.

How long is the Traveling Merchant here? / When will he return?
Since the Traveling Merchant sources his goods from places far and wide, it can be a bit difficult to predict his schedule. Be sure to check back frequently to see if he’s returned with exotic goods to trade!

How do I unlock a locked trade?
Some trades have prerequisites that must be completed before you can unlock other items. Some locked trades require you to do a specific trade or trades first, while others just require you to do some number of any trade.