I'd like to know strategies for the necromancer. So far what I've tried is using Spectral Grasp to pull the clones into the vortexes, which works okay for one clone, but then it is on recharge for most of the fight. I've also got that signet equipped for the passive speed boost, and well of power to cleans cripples.
But once phase 2 hits, it really becomes hard. Liadri is often grouped up with a bunch of her clones, making targeting very difficult. Even with T to target, because you're kind of forced to keep moving, and your camera won't be looking at her most of the time (and targeting fails if you can't see the target). I've seen videos of people using Lich Form to DPS her to death, but I instantly get crippled in Lich Form (which is already slow), and it becomes a death sentence. I can't go into close combat with her, because she'll always be surrounded by her insta-kill clones in phase 2.
I suppose I could drop a well of darkness on top of her, but would I be able to DPS her to death before the blind wears off? I doubt it, and then it's instant death by clone.