[3.1] UberDan's INSANE Flicker Strike! HC viable, 8k+ HP, sanic clearspeed

Flicker Strike normally revolves around Critical Chance using something like Terminus Est for generating Frenzy Charges, but that requires investing many points in damage clusters on the tree and that means less survivability.

With the new Abyss gear we are able to reach insane Elemental damage values by stacking as many Abyss jewels as we can. They provide both damage and life and the pathing to them allows us to pick up a ton of Life nodes. This build can have over 8k Life and great survivability. I have personally done Chimera, Hydra and Phoenix with 1 damage mod with level 19 0% gems and average gear. It's also a VERY fast map cleaner, on par with Cospri CoC Discharge or Autobomber.

Frenzy charges are generated with the following combination:
A sword with chance to Bleed applies Bleed on the enemy -->
the Golden Rule Jewel reflects the Bleed back to us -->
as long as we're bleeding, the Red Trail Boots give us a Frenzy Charge. Simple, effective.

PROS:
* Works very well on a budget up to around T14 maps, including speed-farming Shaped Channel/Strand/Atoll/Toxic Sewer/Waste Pool/Vault
* Can do all maps including T16 Guardians easily with good gear
* Never-seen-before tankiness on a Flicker character!
* "Pretty good" clearspeed 4Head
* Barely affected by any map mod, except for No Leech and Elemental Reflect
* VERY FUN!

CONS:
* Becomes very expensive if you're going for all the best gear
* Can't run Elemental Reflect or No Leech
* Can't do Atziri/Uber Atziri due to the nature of Flicker. Untested on Shaper but I'll try it sometime soon.
* May kill itself if using Headhunter
* May cause eye/head aches or seizures. The Flickering playstyle is not for everyone.

* Wouldn't the self-bleed kill us?
Nope. The Bleed damage is based off of Physical damage, which we have almost none of. You'll never feel it at all, especially with Slayer's overleech.

* Why not use a Headhunter?
Funny enough, that tiny amount of Physical damage that we use to apply a Bleed on ourselves is actually enough to one-shot ourselves in cases where we are very-well-fed on HH Rare mobs... So, sorry, the self-bleed can actually kill us.

* Why Herald of Ash?
We don't crit because of Elemental Overload and we don't shock/chill/freeze because of Elemental Focus. This renders both Herald of Thunder and Ice as a small boost to flat Lightning/Cold damage, nothing more. On the other hand Herald of Ash takes our MASSIVE overkill damage and turns it into a sick AOE burn.

* Why Puncture?
For the rare situations where we have no Frenzies (for example when re-entering a map after a trade or on bosses with long invulnerability phases), we can instantly get a Frenzy charge with a single hit.

What makes this build so tanky?
Stacking of multiple defensive mechanisms:
200%+ Life on tree
12-14 Abyss Jewels with Life
73% Dodge and 63% Spell Dodge with Acro + Phase Acro + Vaal Grace
Decent Evasion
20% block
CWDT + IC + Enfeeble
Balanced Wise Oak
Basalt / Stibnite

* How do I balance the Wise Oak?
There's no easy way... But you can use Master crafting to your advantage - if your rings or amulet have an open Suffix, you may be able to recraft a resist until you hit the perfect value.
You can also find Abyss Jewels with Life + Damage + Resist/Double-resist (That's what I've done, check the Jewels in my Gloves)

* Why not take the Brutal Fervour ascendancy?
It gives Immunity to Bleed while Leeching, which means we can't generate Frenzy charges.

* Which expensive items are mandatory for this build? Which aren't?
Only Lycosidae is mandatory to avoid missing. The rest of the gear can be replaced with budget variations (see below).

Bane of Legends - Become quicker with free Onslaught and and Cull at 20%
Impact - Adds AOE damage to your Flicker. With Daresso's Passion you can start Flickering happily as early as level 43!
Endless Hunger - Keep leeching long after you're done fighting
Headsman - More Damage and AOE

Vaal Pact - Slayer and Vaal Pact go hand-in-hand
Acro+Phase Acro - We have a ton of Life and it'll be Full most of the time thanks to overleeching and Dodging.
Elemental Overload - With 0 crit nodes on the tree or gear, this is the obvious choice. Who can say no to 40% MORE damage?

Kill all.

Major: Soul of Solaris - Protection from Crits, AOE, Shock and Burn.
Minor: Soul of Shakari - Immunity to Poison!

The linked gear is what I was using while writing this build. At this point I already killed T16 Guardians and felt like the build is really powerful. Now I have better gear (see below) and it melts everything.

Whatever flat Elemental damage you can get your hands on + Life

Tabula Rasa or any 6-link chest works fine. Instead of swapping Damage on Full Life vs. Ancestral Call, you can keep DoFL in permanently and swap Ancestral Call around with Ruthless for boss-killing.
Helmet and Gloves can have 1 Abyss socket, it's not a big deal.

PoB of my char: https://pastebin.com/qTDGxguH