No. I like the game as it is. This would end up being a deck that, kind of like how some argue Crows or Druid King, you would have to play, otherwise you'll lose all your cards.

It would absolutely lend itself to trolling, where someone just eventually steals all your cards so you can't play anything but then also not end the game, forcing you to concede.

If the game were balanced well I think that a deck like that could be fun. Seeing it paired with a deck like Duke of Crows and sitting there watching your oppenent play for a couple turns in a row wouldnt be much fun.

I gave it some thought before answering and I think: yes, but not exactly the way you specified.

The biggest gap in the decks at the moment is that once your opponent has built up a really strong deck there is very little you can do about it. Even if you do everything you can, throughout the game to stop your opponent getting the cards they want the rng of which cards appear can still mean your efforts are for nothing. If you've ever played a game against someone with a lot of Crows/ Rajhin/ Druid cards, or a combination of the above you'll know that there comes a point where the opponent just has so many rescources, all the good cards, and they can just hold you down with ease while they strut around doing whatever they want. Or you get to be the person with all the power and watch your opponent struggle even though a fair bit of the power imbalance came from card rng.

Anyway... straight up being able to steal cards would be bad, I think, because if you have the resources to do so then you can potentially steal all your opponents cards creating an even more skewed imbalance. I think what would work would be if you could swap cards with an opponent, where you control the card you're giving to the opponent but the card you recieve from the opponent is random (and from their current hand including active agents). The ability to swap cards should be a patron ability and it should cost 2 gold + 2 power (bearing in mind that the Psijic Patraon costs 4 gold to activate). The other final thing is that I think the Patron ability should cost 2 gold + 3 power, if you have higher prestige than your opponent rather than the cost of the skill changing based on who has favour or not.

This would make the Patron and the theme of the deck less about theivery and more about adressing power imbalances, giving power to the underdogs and toppling powerful systems. It would really allow the player who has less to be able to distrupt the opponents deck composition. e.g. foisting off treasury cards or any card you don't want to stop your opponent from having a whiole hand of Crows.