Restricting access to a deck

[Doofie]

Hi,

I’m putting a module together and I’ve come across a stumbling block. Excuse the format but it’s what I’m used to.

Scenario: ensure players cannot draw specific cards from other players’ discard piles.

Given that I am Player A
And there is at least 1 card my discard pile
When I right-click my discard pile
Then I am given the option to draw specific cards

Given that I am Player A
And there is at least 1 card my discard pile
When Player B right-clicks my discard pile
Then Player B is not given any options

Ideally what I’d like to do is to set a trait in a prototype to work this effectively. Is it possible? If so, how?

Thanks.