The witchfinder:
From my perspective she is comparable to NG´s Emhyr. Her deploy is much stronger and those little syndicate crowns might perfectly synergize with Townfolk and it can be seen as a coin limit of 12.
Regarding her passive ability: Emhyr has much more synergizing cards (Thirsty dames, spy benefitters, coup de grace). However, one could argue that bounty has more value than spying. Spying is typically used in engine decks whereas bounty is currently mostly used in control decks + enough spenders.
Synergizing cards: Of course Graden as he directly benefits immense from the bounty. Furthermore, the witch hunter Executioner. Cards like Whoreson´s Freakshow will be key to eliminate the bounty targets. Additionally, some of the removal crime cards will do their job. Additionally, one might use Azar Javed as a defender to protect her and Whoreson´s Freakshow.
As already mentioned Townfolk might also be a consideration du to +3 of the syndicate crowns
Dependent on the strategy the following leaders have benefits:
- Off the books for Tribute discount for Graden, Moreelse and Tamara (?) (+ additional tribute cards)
- Blood Money to have one big damager for bounty cards but high risk from overprofitting
- Pirate´s Cove for the spenders
- Lined Pockets when you go for the Townfolk
Main challenge: One idea might be to go for a witcher hunter heavy deck + Tamara Strenger. But then you made face the challenge to have an appropriate amount of spenders. Furthermore I see the risk that one has a hand with many bounty givers but not enough damage dealers.
All strategies except Townfolk might significantly struggle against veil-heavy, purify heavy, deathwish or non-unit opponent strategies. Furthermore SK self damage might also be a challenge.
Vigiliantes
That´s exactly what the bounty archetype needs. A card which benefits from each bounty placed on the opponent side. Additionally they have the witch hunter tag which might be a consideration for Tamara Strenger.
Synergizing cards: Comparable to The Witchfinder but no Townfolk synergy
Main challenge: Also comparable to Witchfinder. Additionally I want to highlight that specific self-wound deck running into Witchfinder + Vigilantes might be a big benefit for your opponent as he can place the units he wants to be damaged to get the self-wound benefit.