Journey

Zoltan - I wouldn't take it (in the Necropolis, Necromancer, Vampire, Berserker build). What's the point of "Unstoppable Magic" for a Necromancer? Maybe I'm missing something?

I also played through with Zoltan and didn't understand what "Unstoppable Magic" is for. I defeated the first mentor easily without it.
Maybe the author can explain what the purpose is?