Can Necromancers even be defeated?

The chance of the Red Tower winning against Necropolis with rule restrictions is around 30% (for a standard map), while the opposite is 10-15%. Naturally, this assumes equal skill levels for players on both sides.

What's wrong with Josephine with full stacks? She's an excellent hero for the start, and then it depends on how things unfold. Otherwise, you can't take a "left-wing" hero into snowy areas, and it's risky to rely on random morale boosts from hats.