Here's my HC SSF take on Forbidden Rite poison.

I actually got this idea awhile back from Jungroan in his league announcement stream and have been cooking by myself ever since.

There's a lot of things you can do with this build so I've included a lot of random notes to think about. If you have any suggestions, feel free to comment or dm me.

POB: https://pobb.in/In3HPIYnLLbf

Highlights

• 3 button build (FR, Blessing, Movement skill)
• 1.8 million poison dps with 4.86s poison on 5 link with 2 mod wand, if no grace and double wand, than 2.7 mil

• 12.8 million on hc ssf level gear (probably doable in under 10 divines), 19 mil on clusters
  • scalable to dot cap endgame but I'm too lazy to pob something I personally won't reach
• 110+% movement speed
• base 1400 life recovery into maps + 49% recoup
• capped suppression (with easy access to more)
• 100% wither uptime, cull, and auto curse
• Wind dancer with 38k evasion in midgame pob with 4% recover on hit = immortal mapping

Other Notes:

• Level as PConc or Toxic Rain then transisition when you have capped chaos res and life flask ascendancy

  • Can grab chaos res nodes between shadow and witch (Tolerance cluster) early
  • Can grab ES Mastery "100% increased Energy Shield from Equipped Helmet" if you have EB problems
  • Can run early quartz for phasing before abyss jewel (you really want phasing for this build)

• SC vs HC SSF
  • Run Grace + Malevolence blessing + jade over Malevolence + Haste blessing + sulphur flask
  • If you want more life, pick up Thick Skin or Melding
• May need to grind Cata in Foothills for leech flask craft
  • Personal preference, recovery will feel a lot worse (due to losing 25% recoup) but flask is enough until you get a higher life pool
    • the mod itself won't provide that much recovery as you lose the leech instance on full life recovery and each instance is like 50 life lol
  • can leech from alt qual void manip or gloves
  • can drop spell echo if you can't sustain life early
• Only 5 FR overlaps occur with aoe nodes
  • without aoe nodes (8 vs 9 radius), you get 3-4 overlap
  • old pathfinder builds would get this aoe on ascendancy
• Phys mitagation is a bit weak without Taste of Hate / progenesis / doppelganger guise
• Can run Diadem to fit petrified blood but idek how rare it is so it's not included
• POBs get progressively more scuffed as I mostly just optimized for early game (as I would wing mid/late game with my drops)
  • Take it with a grain of salt (has no unique flasks so add in ToH and progenesis)
  • you can also drop the life flask ascendancy with enough recoup and life gain on hit
  • check out WolfsGoRawr for a super endgame SC version
• If you want to go self chill/self poison go see this post Arqium
  • interestingly, you can annoint arcane expanse + aoe craft with enough poison chance

Edit: https://pobb.in/8EYYugLHcnBM Thanks to Saebelzahigel and prozajik for spotting out ES recovery problems and providing the solution. I've also added recovery values in the pob to make things more clear. We will use ghost shrouds to recover our ES to full every 2 seconds. That means that as long as we don't run out of ES within 2 seconds, we should be fine.

In the midgame pob, we also use reduced mana cost flask craft + Militant Faith jewel + boot enchant to reduce the mana cost by a lot. However, Militant Faith loses a lot of strength so it might not be worth putting in. If you still have problems, you can also click the "Skills Cost Life instead of 30% of Mana Cost" Mastery.