Originally Posted by Chthon

What worked best for me was:

• Do a test pull to determine their "turnaround point" (the point where the mob stops chasing and turns around). Sometimes I'd just guess, but, in the end, wrong guesses cost me more time and hero DP I think...
• Flag the tank on the turnaround point, using a corner or all if there was one there to use.
• Flag the rest beyond the turnaround point, around a corner or along a wall if there was one, within spell range.
• Pull with a longbow, tell the hero with frozen soil to drop it, and run past the tank.

If all goes well you get an easy-to-AoE cluster around the tank and a few indecisive casters who are neither attacking nor retreating who you can finish off easily.

Of course, this all goes out the window with forgewight...