Since I haven't really seen a thread about NG I would like to briefly discuss the new cards.
Thanedd Turncoat: brokvar hunter with a deploy and a slightly worse engine ability. It's a good card for its cost; not much to say here except that playing an engine on your side of the board is way better than using informants or emissaries
Master of Puppets: fun card when you pull it off, not so fun for the opponent. I'd say it's most effective as a round 3 surprise card when you have last say, sort of a bronze Vattier. It's memey, but interesting.
Fercart: generically good thinning Gold for any deck with special cards. It's the second best spy-generator after Emhyr, but I really fail to see the relevance of special cards with the spy archetype
Artaud. It's the dream card for Assimilate, but its requirements don't fit too well with the more all-in lists, since you need to find and keep a Torturer in hand. As for spies, it doesn't seem to answer any critical issue (e.g. what to do when Emhyr is answered).
Fundamentally what I don't like about Artaud is that it's trying to push an hybrid between the two things. Ultimately it's a good legendary, but it's not a game changer.
On a other topic, I wish CDPR buffed Ducal guards and Ard Feainn Heavy Cavalry, because they got really powercrept