wanderer_give_random_economic_trait_effect

wanderer_give_random_economic_trait_effect = {
	random_list = {
		100 = {
			trigger = { NOT = { has_trait = architect } }
			add_trait = architect
		}
		100 = {
			trigger = { NOT = { has_trait = administrator } }
			add_trait = administrator
		}
		100 = {
			trigger = { NOT = { has_trait = avaricious } }
			add_trait = avaricious
		}
		100 = {
			trigger = { NOT = { has_trait = lifestyle_gardener } }
			add_trait = lifestyle_gardener
		}
	}
}

As written in game/common/scripted_effects/00_courtier_guest_management_effects.txt.