I feel like this has to have been asked before, but I couldn't find it being addressed here or on the wiki:
What happens when you play a Black Market in the middle of resolving a previously played Black Market?
This should be possible with either Crown or Capitalism.
The top 3 cards of the Black Market deck are revealed, and during the "play Treasures" part, you play another Black Market. Do you reveal 3 more cards from the Black Market deck and set aside the previous 3? Do you then have to choose which, if any, of the 3 new cards to buy before going back to the original 3? And you can spend $ from the Treasures you played with the original Black Market in the nested Black Market, but then that money is gone when you go back the original Black Market?