Basically, I’m looking for the build that feels the best for fighting bosses like Aberroth without just completely trivializing him with damage. Meaning ideally it’s something tanky enough to not just die to random stuff, has enough damage that the fight doesn’t take like 10 minutes, is mobile, and doesn’t require a lot of janky set up or combos.
Odd request, a dead boss deals no damage so a build that chunks phases would be the most comfortable…
So basically rule out melee since we ain’t counting instaphasers.
Any decent minion build would fit your criteria, Falconer/ Beastmaster have better sustain though Necro typically stays further away from combat. Personally, I’ve killed him with Abom Necro and Bleed Falconer minion builds so far and they do just fine. Scorpion/Sabertooth Beastmasters should also be good as well as Wraithlord/Archmage Necro.
Mobile casters should also be a good option. I would recommend Avalanche Shaman and Frostbite Frozen Orb Sorceror.