When you gain an Action card during your turn, you may spend 2 Favors to play it.
The City-state is an Ally from Allies. It allows you to spend Favors to play Action cards immediately upon gaining them—an effect similar to the ProjectInnovation.
If you gain an Action card in your Buy phase (such as by buying it), City-state can still let you play it then; if it gives you +Actions, that won't let you play more Action cards in your Buy phase, and if it draws you Treasures, you can only play them if you haven't bought anything yet.
City-state can only play a card that's still wherever it was gained to (normally the discard pile) but can still play a card in your discard pile if it was covered up by other cards.
City-state only works during your turns.
Strategy
Versions
English versions
Print
Digital
Text
Release
Date
When you gain an Action card during your turn, you may spend 2 Favors to play it.
Allies
March 2022
Other language versions
Language
Name
Print
Digital
Text
Notes
German
Stadtstaat
Wenn du während deines Zuges eine Aktionskarte nimmst, darfst du 2 Gefallen einlösen, um sie zu spielen.
Trivia
Secret History
Originally just one Favor, which was nuts. Also it had the wording where you set aside the card, and check if you did. That went away with a rules change: now you can't play a card you can't find (though you can replay it, meaning ThroneFile:Throne.jpgs on Horses still work).