Necromancers are a super fun faction, but again, I think I prefer the companion character, Markal. Fiona’s hero spell is one of those ones that can be pretty handy, though, like when your opponent only has a few HP left and a huge gap in their defenses. If they also happen to have a champion unit set to go next turn, it can easily mean the difference between life and death.
I also think she has one of the best designs. I love how her sprite floats around.