Prove Yourself to the Overseers
 
While you have Guild Overseers, advance 
3 each time you use the Prelude action of a Guild card that discards itself.
 
The Guild Overseers card limits when you can use Guild cards, including Guild Investigators!
 
Keep the Guilds in Power
 
While you have Guild Overseers, advance 
2 each time you take the Recover action of your Guild Investigators.
Act: 1