Which mixed hero class from the Chaos faction do you like?

Witcher - in my opinion, one of the best classes against living opponents, but for greater effectiveness, it requires artifacts - the Dagger of Sorrow (or Scroll of Sorrow), the Griffin Helmet, and the Crown (which negates immunity to fear).

Lich - old age - is powerful, but it doesn't work on everyone, and making the body undead makes its choice questionable.