According to the designer of Dominion, Donald X. Vaccarino: Bridge makes all cards cheaper, not just ones in the supply. This was to prevent problems in weird situations. I am not sure the kind of ...
What happens when I play a Swindler and no cards with the same cost as the trashed card are in the kingdom set?
Swindler: +2 Coins, Each other player trashes the top card of his deck and gains a card with the same cost that you choose. Say my opponent has played a Black Market and now the top card of their ...