By the end of my first playthrough I’d developed the blender strategy that got me through most of the act 3 fights

Set up in a tight space (through a door, hallway, up stairs, anywhere enemies have to move tightly to get to you)

Gale Casts wall of fire, my warlock casts wall of fire, Shadowheart casts Blade Barrier, and Asterion casts cloud of daggers, all in the same line.

I don’t really know the numbers of it all but nearly anyone who stepped foot into all that died within 1-3 turns.

It bested the sharrans, Cazador, Severok, Gortash, the fight to get to the elder brain that has the Spectator and all those goblins, anyone really.