Espionage is when you send your spies to take actions against a target in so-called spy-ops.
More information can be found on the wiki.
|Barracks Spy||Reveal estimate units|
|Castle Spy||Reveal castle improvements|
|Land Spy||Reveal land|
|Survey Dominion||Reveal buildings|
|Steal Food||Steal food from target|
|Steal Gems||Steal gems from target|
|Steal Lumber||Steal lumber from target|
|Steal Mana||Steal mana from target|
|Steal Ore||Steal ore from target|
|Steal Platinum||Steal platinum from target|
|Assassinate Draftees||Kills 3.5% untrained draftees|
|Assassinate Wizards||Kills 2% wizards, Scales by day in round from 137.5% to 62.5%|
|Magic Snare||Reduces wizard strength by 2%|
|Sabotage Boats||Destroys 2.5% boats|