There are cards this would effect...Cards that buff damage, cards that have "deathrattle"..it would be a good add.
I completely disagree with you, sorry. That is way these card are so unique to have them in the deck, if we start place silence on them, then this uniqueness is not relevant. Is make sense in Hearthstone because cards have moves, turns and we using them multiple times (card can be silence for one turn but you can use them in next) but in gwent don't have any sense.
I know there is a lot of Herathstone lovers here also but I'm not one of them, I played game but Im not fun of that card game.
Gwent for me is perfect how it is - I haven't been fascinated by any card game like that since Triple Triad in Final Fantasy VIII.
Don't get me wrong, Hearthstone is a good game but I don't want to see Gwent turning into game like dozens of others because they are all so similar at every stage of the game, would even say copies with only slight differences.
Keep away Gwent as far as possible from Hearthstone. Because this is way I fell in love in Gwent - uniqueness, originality without trying to copy something from other game.
[h=3][/h]