The reason behind this build is to make use of the Twilight’s Veil dagger which is aether and chaos based. Considering my previous aether spinner build I decided to go for aether + chaos spinner. Because of flat damage bonuses I decided to go for the Arcanist. At first I thought about the Demolitionist because of resistance reduction on the Thermite Mines but the build was lacking in damage a lot when I was theorycrafting it. With the Templar I have a great DPS and I managed to get respectable 74 % resistance reduction for both aether and chaos. I consider this build to be my greatest theorycrafting achievment. I started it just for fun but then I realized it could be done actually. Damage is from large part due to a spirit dump.
I used two Monster Infrequent items - Valdaran’s Shoulderguard and Gargoyle Girdle. You want affixes for OA and DA and you absolutely need Dread Lord’s prefix on the belt for lifesteal. I used crafting bonuses on helm and amulet for freeze resistance and on pants for stun resistance.
image from the game with passive buffs only
image from the game with passive buffs + Ascension
nice DPS 240k - 270k
OK base OA - over 2950 OA (nice OA with Ascension over 3100 OA)
up to 200 DA reduction to enemies from component and Eye of Korvaak
OKish critical damage 33 %
OKish aether and chaos resistance reduction from Guardians of Empyrion (Conduit for them), Arcane Bomb, Eldritch Fire and Revenant - up to -74 %
damage from devotions - Eye of Korvaak, Revenant, Eldritch Fire, Arcane Bomb and Imp
OK life - 12000 HP
OK DA above 2900 DA (Resilience increases it more)
up to 345 OA reduction to enemies from Dark Desires (or Eye of Korvaak), Arcane Bomb and component
nice lifesteal 16 %
OK CC resistances without Ascension (high CC resistances with Ascension)
capped disruption resistance using Arcane Harmony Leggings
reasonably overcapped resistances
at least +3 to all max resistances (+7 with Resilience active)
OK physical resistance 21 %
lower armor - above 1800
% reduced damage to enemies from Soulfire
% damage absorption from Maiven’s Sphere
flat damage absorption from Ascension
Mirror of Ereoctes
This build does SR 65-66 relatively easily. No boss is a problem. I don’t push my characters higher but it can go higher if you are a skilled player. I don’t play Crucible so I don’t have a time number for it.
image from SR 66 with Korvaak dying
I have also made a thread for improving Aether + Chaos damage combination here.