Primary Calamity Fragments in Path of Exile 2 unlock Uber Arbiter of Ash, so the best builds are those that handle its bullet hell phases, flame mechanics, and high DPS checks while scaling into ladder-topping power from the drops.​

Twister Amazon (Ranger/Deadeye)

This mobility-focused bow build excels by dodging Phase 1 seed explosions and Phase 2 chasms with Tornado Shot chains and Ice Shot freezes, sustaining through Herald buffs. Uber drops like Sine Aequo Grand Manchettes boost projectile speed and skill uptime, pushing clear speeds into T16+ Citadels for endless fragment loops.​

Hollow Palm Invoker (Monk)

Unarmed Storm Wave variants tank sword slams via energy shield and crit scaling, detonating fissures on bullet patterns for counter-damage. Morior Invictus Grand Regalia from Arbiter elevates defenses and rune efficiency, making it a safe farmer that converts fragments into mirror-tier crit DPS for leaderboards.​

Comet Frostbolt Stormweaver (Witch)

Cold spell rotations freeze and shatter adds while infusing for boss DPS spikes, evading beams with Frostbolt mine placement. Solus Ipse Grand Visage enhances mana/light scaling, turning fragments into screen-wide nukes ideal for juiced waystone clears and sustained Uber viability.​

Ignite Proliferate Bloodmage (Witch)

ED/Contagion hybrids ramp wither stacks on Arbiter’s adds, proliferating ignites through flameblasts for passive clears. Prism of Belief jewels corrupt skill levels post-Uber, amplifying chaos mastery into billion-DPS ignites perfect for Citadel chaining without gear swaps.