I was wondering what happens when I have Margaery Tyrell (or Bran Stark) in play when Dragonstone Port is active in play.
Everyone chooses plots.
I activate Margaery Tyrell, causing my opponent to reveal a new plot. That plot would have to come from his plot deck, so could he choose the plot that has already been chosen (but not revealed)? Physically, its separate from his deck at this point, or should be distinguishable at least, since it cannot be changed. What would happen to the plot he has already chosen if he has to choose another? Does it return to the plot deck? does it go in the used pile?
I want to use this action window to create as much chaos in multiplayer as possible. If it works, I can use out-of-house Bran Stark to burn through city plots in my baratheon deck.