Thanks for your replies guys, i appreciate it but i think it acted abit diffirently in my game. There is just no chance at all from escaping from the fear AoE if you're in melee on Nightmare, even with evade skills, it just fires far too fast(1.5-2seconds max) and if your characters are in the middle of an animation, forget about it, and since it's impossible to melee him since he kept doing it directly after porting back to the tank i had to come up with a diffirent strategy.
So if anyone is having simillar troubles here's how i did it:
Since it's impossible to melee him since he'll just do the fear thing and port away the very second someone is in melee i possitioned myself and Bull close to the spot where he popped up after fearing(9 out of 10 times, it was the same spot) and just wait for him there while i had the entre party on hold with Cas just holding Shield Wall which was never very long, with out fail he'd act like this: Sneak attack on Cas-> Fear AoE-> port away to shoot and repeat ad infinitum.
The only window of oppertunity to attack him was 1. While he was shooting and 2. While he moved slowly to get in range to use his sneak attack,
I'd wail on him while he shuffled closer to Cas and the instant he dissapeared into the ground i switched to tacti cam and commanded Cas to use Shield Wall since the AI will block the sneak attack every time, making sure Vivienne was nowhere close.
I repeated this acouple of times untill it hit the second phase.
After dealing with the templars he comes back as some sort of rogue type thing and it's just impossible to tank, he just ripped Cas apart in seconds so what i did was i took control of Cas and just kited him around in a circle while the rest beat his ass, after acouple of laps he came back as his annoying old self and i just repeated step 1 while taking care to move my group out of any **** on the ground.
Most challanging fight i've ever done in a DA game by far, think i'll bring some archers my next playthrough
