I think it's almost a must in the realm of torment. You can't even beat a group with 2 rain of torments with hench/hero's. 2 Deep freeze+2 Icy spikes and you're dead.

And because there is always like 4-5 people in a town there you can't make proper human groups. How do you ever cap those elites? So a Spread or Scatter option will be the solution
Edit: The only way is taking 2 intterupting hero's and 2 healer+1 motivation. That dont give's any damage at all. It only gives you long enough time to kill 2-3.