He is supposed to be a scout, but when you take him inside the enemy territory, they make him leave in two turns (since he has an attack value I guess) Especially without the usage of maps early on, knowledge of the enemy territory is vital, and one of the advantages as expansionist is to be able to scout the enemy territory without causing much trouble. I may end up modding him to not have an attack value although it sucks to not be able to control a golden age..