Very nice editing, I might suggest that having the graphic each time you do your ground AoE is kinda overkill after the 5th time or so. It was a pretty cool effect though! I find it interesting that you just eat the frontal cone AOE that Ingvar does... on my slaves it will drop them to 30% health so you must have massive health on your slaves or Im doing something wrong. I had to make a seperate movement key for this boss alone. I bound the tank's forward movement to my down arrow key so that when he charges up I run my main through him and the slaves back up in the same direction. It gets hectic at times, but once I made that key change I one shot him.

I also noticed you actually run your main in frost presence, do you slaves run in that too?