PoE Mageblood, Void Battery, Nova builds

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.

Hi there! Taking profit of the new crucible tree I’ve decided to squeeze a well rounded discharge build taking both damage and defenses to the maximum reaching 14 power, frenzy and endurance charges. I don’t use the ralakesh glitch boots, I generate endurance and frenzy charges with aspect of the cat and power with storm brand. The uptime is almost permanent. I’ve 3.9k hp 90% phys mitigation 37k evasion 100% spell suppression 76% ele res 60% chaos res (working on it) Ailments immune

Since I only play glass cannon type of builds, I wanted to bring back something I haven't played in a couple of years. It exceeded my expectations but I do not recommend playing unless you want to rely on mechanical skills and a decent amount of luck. It did have a lot more damage than I thought so you could probably shave off like 20-25% of the damage and put in defenses on a different class, I have thought about it.

Either: Inspiration + Crit Ruby flask + crit multi small nodes in top right or Awakened Add Lit 5 + Mana Reduc Ruby flask + 80% crit mastery + crit chance small node top right