The build can do all endgame content:

Push Dragon (Ordrak) without shenanigans:

Clear SS21 (3 star):

Divine Ascent Stage 35+ (SS13):

Conquest of the Realms (Plane Watcher 6 | <8 secs?): https://youtu.be/hDGqICN1UTg?si=FtvOrQqQCWTgw3ON

Solo Carry City 7 (forgot to record sound): https://youtu.be/dZTXfcaNrgQ?si=-9Tbd09hY8qPszC5

Proof of the Brave V (Kong Enjoyers) : https://youtu.be/OreAbWnQ5zE

Trial of Divinity Floor 50 (Kong Enjoyers): https://youtu.be/tLGmvMzyPAk

Void Bossing: https://youtu.be/u7jUScEpXiI

When you get to TM8 start slowly working towards endgame Skills. Replace Preparation with Activation Medium: Spell Burst, these can be bought from AH. Replace Control Spell on Chain Lightning with any Chain Lightning: Web of Lightning (Magnificent)WOLChain Lightning: Web of Lightning (Magnificent) and for Pinnacle bosses use Chain Lightning: Merge (Noble)MeChain Lightning: Merge (Noble) , these can be bought from the AH. Don’t upgrade T3 Magnificent and Nobel Skill, just save them to Upgrade your T1s you will buy later. Replace Ice FocusIFIce Focus, Spell AmplificationSASpell Amplification, Frigid DomainFDFrigid Domain and Electric ConversionECElectric Conversion with Precise: Ice FocusIFPrecise: Ice Focus, Precise: Spell AmplificationSAPrecise: Spell Amplification , Precise: Frigid DomainFDPrecise: Frigid Domain , Precise: Electric ConversionECPrecise: Electric Conversion if they are cheap on AH.

Level 100 (99) + treasure trove (6) + path of progression (10) = 115 Talent Points
If you feel like you are missing Talent points check this walkthrough Youga 1 (Spacetime Illusion) Chain Lightning.

We need to start moving slowly into Critical Strike rating and Critical Strike Damage as T1 gear begins to provide enough %increases and stats.

Goddess of Knowledge: If for some reason you are not seeing the Focus Blessing Buff below you likely removed your generation and easy way to get it back is just swap Burning Touch for Chilly . However you should be able to get this easy through slate mods/ring mods/boot mods. If your damage after tanks after upgrading and item or adjusting something. Double check for this buff also make sure your auras didn't turn off.

The prism here can be any prism and no need to craft it as it doesn't provide much benefit of the resources. We mainly want the +1 All skills for free. If you want ideal then with Burning Touch grab the 12% additional while having spell aggression, 1% additional for every 5% movement speed or the 4% additional per max stack of spell burst.

Get some cheap slates look for these mods on Goddess of Knowledge Slates:

You will also want a Legendary slate with one of these mods to sustain movement with Blade-dancer's StepsBDSBlade-dancer's Steps

We want to upgrade to at least Rare (Purple) Hero Memories for the Level 2 Traits depending on what is cheap. We will take whatever damage mods we can get along with another useful stat like %energy shield or %block. Don't over spend unless you are snipping a Ultimate (Red). These will be replaced with Epic or Ultimate quality.

We save for Israfel's LawsILIsrafel's Laws. Can also double corrupt and hope for the best.

Don't forget about Micro's add Intel, Crit Rating, Crit Damage, or Spell Damage Micro's Fates can also add some Mediums just don't cover up Penetration or the Elemental Damage Nodes. Elemental Damage double dips as it increases both our Lighting Damage and Cold Damage.
You can also swap in another Damage Pet for the Traveler fight if needed. Don't forget to use Chain Lightning: Merge (Noble)MeChain Lightning: Merge (Noble).

Get +1 Max Focus Blessing mods on your slates. +5% spell crit. per FB is also nice but priority on the stacks.

Blade-dancer's StepsBDSBlade-dancer's Steps should have corrode on movement cdr. We want to be farming faster. if you failed the corrupt or bought a failed corrupted pair now is a good time to replace.

We should also grab focus blessing in the Talent Tree and move points around to optimize our damage with new gear and slates.