A good army to beat Karador on impossible with a paladin?

[Vilk]

I believed there was necro call from necromancers but also a necro call of crystal and this one does only that but once at each turn. Next time I'll look more closely the log to see what happen.

Until now only strategy that counter necro call was working otherwise I had feeling to get the same stack restored next turn.

I'm still curious to know how iregev managed necro call, pure force power working in this fight surprise me.