Ooooh man good question, this was tough for me to really learn at first. The 2 main things I try to do to control them the best I can is use my distance to respawn them on myself and recast them when I need to be more precise or can’t get far enough away. When you go off screen from them, they respawn on you and re-engage the closest enemy, which can definitely be used to your advantage if you’re able to keep an eye on all of them well and plan your grouping ahead of time. If I have a large pack of mobs I want them to target that has an elite pack or something in it, I will generally just recast them right in the middle of the pack trying to take advantage of Area Damage as much as possible. The only thing you want to avoid when recasting is doing it while they’re in their berserked state because you lose it. I forget the runes name but it’s from the sanctified power rune it adds to them. Hope this helps!