If your screen-and your sanity-has had enough of Comet spam this league, the Ember Fusillade Titan Cast on Critical (CoC) Arc Archmage setup is a refreshing and POE2 Currency highly effective alternative. Designed specifically to excel in demanding encounters like Uber Arbiter, this build trades visual overload for precision lightning damage, exceptional sustain, and a surprisingly smooth rotation.

At its core, this setup combines Archmage scaling, Arc's innate chaining power, and Lightning Infusion mechanics to deliver consistent burst damage without sacrificing survivability.

Core Concept: Titan Tech and Archmage Synergy

The foundation of this build is Titan's 100% reduced skill duration tech, which enables reliable life cost sustain when paired with Archmage. Reduced duration ensures triggered spells resolve instantly, keeping mana and life expenditure predictable and manageable-even during prolonged boss fights.

Archmage converts your massive mana pool directly into spell damage, making Arc an ideal candidate due to its efficient scaling and strong single-target performance when properly amplified.

Why Arc Over Comet?

Arc shines here for three reasons:

Clarity and Control - Arc provides clean, readable visuals, making high-intensity fights like Uber Arbiter far easier to track.

Lightning Infusion Scaling - Each Lightning Infusion triples Arc's damage, turning a traditionally clear-focused skill into a boss-melting tool.

Consistency - Unlike delayed or area-based spells, Arc delivers instant feedback and reliable hits during CoC triggers.

This makes Arc not just viable, but optimal in a precision-focused Archmage setup.

Generating Lightning Infusions Instantly

A key innovation in this build is the use of Orb of Storms with 0 duration. By fully reducing its duration, Orb of Storms generates Lightning Infusions instantly on cast, eliminating ramp time entirely.

Orb of Storms is triggered automatically via Spell Totem, ensuring constant infusion generation during boss fights while freeing the player to focus on positioning and damage uptime.

The result is near-permanent Lightning Infusion uptime without manual micromanagement.

Skill Rotation Explained

Despite its mechanical depth, the build's rotation is extremely accessible:

Hold Ember Fusillade + Spellslinger

This maintains continuous CoC triggers and Lightning Infusion generation.

Flame Wall + Spell Cascade

With the Infusions of Power anointment, Flame Wall consumes 3 Lightning Infusions to instantly grant 3 Power Charges. Spell Cascade ensures all three infusions are consumed in one cast.

Spell Totem (Orb of Storms)

Drop this during boss phases for sustained single-target pressure and passive infusion upkeep.

This loop keeps damage, power charges, and infusions flowing with minimal input.

Bossing Performance vs Uber Arbiter

Against Uber Arbiter, this build truly shines. Instant Arc damage, amplified by Lightning Infusions and Power Charges, allows you to punish short damage windows without overcommitting. The Titan life sustain tech smooths incoming damage, while the reduced visual clutter makes telegraphed mechanics easier to dodge.

Unlike many Archmage builds that struggle with sustain under pressure, this setup remains stable even during extended high-intensity phases.

Why This Build Is Worth Playing

Excellent alternative to Comet-based Archmage builds

Strong single-target and respectable clear

High sustain through Titan reduced duration tech

Clean visuals and buy POE2 Currency smooth rotations

Proven endgame viability against Uber bosses

If you're looking for a high-skill, low-clutter Archmage CoC build that feels powerful without being exhausting to play, Ember Fusillade Titan CoC Arc is one of the most satisfying options Path of Exile 2 has to offer this league.