PoE 3.23 Affliction, 3.22 Ancestor, 3.17 Archnemesis, 3.20 Sanctum, 3.18 Sentinel Nova, Legion builds

Core items: Weapon - Void battery = 30c Offhand - Prism w/ phys as ele corrupt = 40c Helmet - Eber's with +1 power charge = 1div Chest - 6L Shavs = 3div Gloves - Delirium gloves w/ exarch/eater influence, stats/res ~ 3div Boots - Ralakesh's impatience, high chaos roll = 100c Amulet - Ashes with 27% quality = 3div Ring 1 - Iolite base, pad out res/stats ~ 20c Ring 2 - Iolite base, pad out res/stats ~ 20c Belt - Graven's with malevolence implicit = 40c Core jewels: 3x AOE + Helmet EV charms (helmet one is optional) = 3div Energy from within = 40c Militant faith (Dominus) = 100c AOE + Wither ef

As the title says, I want a build that can one-shot legion. I came across this build, but I'm not sure if it's bait or not. Would this build be worth investing into, or should I look elsewhere? I assume it wouldn't make a big difference whether I have a mageblood or not.