When I saw this new thread my initial reaction was "oh, I would like to see the provision cost of this cards reduced to 10 or less.
But after a few days thinking about it, now I believe the provision cost should stay as it is, so 12. I just think of the big picture.
What cards are the majority of players using? Nilfgaard's.
So my fear is that once you reduce the provision cost of these cards, they will fit in many FANTASTIC Nilfgaard decks, and players would start using for example Vilgefortz 3 times a game.