How to make a deck specific to an area

I’m planning on having each main area in the game have a deck, (like how in Venderbight you draw different cards than in London), but unsure on how to implement this. Any help?[li]

You just do it on a per-card basis, then you have to make sure that the right cards are in the right deck.

OK thanks. And is there any way to bind a card to say, two locations? But not a third?

There is, but you have to roll your own - make a quality that says where the player is, and use that to unlock the cards. Obviously you have to change the quality whenever you change the player’s location as well.