+3 Influence Points per turn. Gain +1 Envoy.
Enemy Spy''s level is reduced by 1 when targeting this city or cities with Encampments. When this civilization captures or kills an enemy Spy, receive 100 Science for every level of the enemy Spy.
Pricing of Districts gain +2 Adjacency from every spies within 1 tiles.
Can only be built once in a civilization.