The winds of change are blowing through Teyvat, even as Version 5.4 captivates players with Yumemizuki Mizuki's debut and vibrant Inazuma-focused events. Yet, beneath the surface of the current festivities, the gears of Version 5.5 are already turning. Beta testing has commenced, and with it, whispers of transformative new Artifact sets have begun circulating through the Adventurer's Guild, promising significant shifts for dedicated fighters, particularly those wielding the Vigilant Yaksha. Leaks from reliable sources like Hakushin, tagged as trustworthy on community hubs, reveal two potent additions: Finale of the Deep Galleries and Long Night’s Oath. For Xiao mains, this news carries a distinct flavor – potent power mixed with the familiar pang of resin-grinding dread.

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The Leaked Sets: Power Forged in Frost and Descent

The specifics of these rumored Artifacts paint a picture of targeted devastation:

  • Finale of the Deep Galleries:

    • 2-Piece Effect: Grants a straightforward 15% Cryo DMG Bonus. Simple, elegant, perfect for chilling foes.

    • 4-Piece Effect: Offers a dramatic 40% boost to both Normal Attack DMG and Elemental Burst DMG... but with a twist. This potent bonus activates only when the character's Energy is completely empty. Delivering either type of attack disables the other bonus for 6 seconds, forcing careful management. Could this fuel a new generation of Cryo DPS reliant on precise energy control? ❄️

  • Long Night’s Oath:

    • 2-Piece Effect: Provides a substantial 25% increase to Plunging Attack DMG right off the bat. A clear signal of its focus.

    • 4-Piece Effect: This is where things get intricate. Landing Plunging Attacks, Charged Attacks, or Elemental Skills generates buff stacks (1, 2, or 2 respectively). Each stack amplifies the 2-piece effect by a staggering 60% for 6 seconds. Crucially, stacks can be triggered every second, and their durations are independent. Imagine stacking multiple 60% boosts onto that initial 25% plunge damage... the potential for aerial annihilation is immense.

Xiao's Potential Ascent: Plunging Into Uncharted Heights?

For players whose loyalties lie with the Conqueror of Demons, Long Night’s Oath screams "BiS" (Best-in-Slot). Why? Xiao’s entire combat identity revolves around his devastating Plunging Attacks, unleashed during his Elemental Burst state. The leaked set mechanics seem tailor-made for his rhythm:

  1. Easy Stack Acquisition: Xiao excels at using his Elemental Skill (Lemniscatic Wind Cycling) and Charged Attacks to reposition and generate particles. Landing these hits would effortlessly build Long Night’s Oath stacks.

  2. Burst Synergy: Once his Burst (Bane of All Evil) is activated, Xiao enters his plunging frenzy. Those pre-built stacks dramatically boost his initial plunges, while each subsequent aerial dive continues to trigger new stacks, creating a cascading effect of amplified damage throughout his burst window.

  3. Xianyun Amplification: Pairing Xiao with the Plunging Attack specialist Xianyun further compounds the effect. Her abilities specifically increase Plunging Attack DMG and CRIT Rate for the team, synergizing perfectly with Long Night’s Oath's focus. The combined force could propel Xiao’s destructive potential into entirely new territory.

On paper, it’s a dream scenario. The Conqueror of Demons conquers even harder! But is this set truly his?

The Bittersweet Truth: A Set For Varesa, A Grind For Xiao

The whispers surrounding the new Electro character, Varesa, reveal a striking pattern. Leaks suggest her kit is fundamentally built around Plunging Attacks:

  • Her Charged Attack reportedly propels her upward, enabling immediate Plunging Attacks.

  • Her Elemental Skill allegedly allows Stamina-free Charged Attacks, facilitating the setup.

This makes Varesa’s ideal rotation a mirror of how Xiao would utilize Long Night’s Oath: Skill/Charged Attack to build stacks -> Plunge to trigger and refresh stacks -> repeat. The Artifact set appears meticulously crafted for her release cycle. While Xiao benefits enormously, he’s inheriting power designed for another.

And this is the core of the bittersweet news. This isn't just a straightforward power-up; it’s potentially another monumental farming endeavor.

The Grind: Xiao's Ever-Shifting BiS Nightmare

Xiao mains understand resin pain like few others. His "best" Artifacts have been a moving target since his debut:

Timeline Version Recommended Sets Reason for Shift
Release 1.3 4pc Gladiator's Finale / 4pc Viridescent Venerer / 2pc Gladiator + 2pc Viridescent Initial options focused on ATK% or Anemo DMG
~1 Year Later 2.6 4pc Vermillion Hereafter Tailor-made set with massive ATK% bonuses scaling off HP loss during burst
Fontaine Era 4.0 4pc Marechaussee Hunter (Reliable Alternative) Provides significant CRIT Rate via HP fluctuations, easier to farm good pieces

Each shift demanded hundreds, if not thousands, of Resin spent battling the domain's cruel RNG:

  • Random main stats

  • Random substats

  • Random substat rolls

Farming a truly optimal 4-piece Vermillion Hereafter set could easily become a year-long obsession. Many players only recently settled into strong Marechaussee Hunter sets as a slightly less potent but far less frustrating alternative. The prospect of starting all over again for Long Night’s Oath is exhausting.

Is the potential damage increase worth abandoning potentially years of farming? Will the new domain offer equally frustrating drop rates? How many fragile resins will vanish into the pursuit of perfect Plunge stats? The questions hang heavy over the Yaksha’s followers.

The power offered by Long Night’s Oath is undeniable, potentially cementing Xiao's place high in the DPS hierarchy alongside newcomers like Varesa. Yet, this promise is inextricably linked to the soul-crushing reality of Artifact farming. For Xiao mains who have weathered multiple BiS changes, the news is exhilarating... and deeply wearying. Will you embrace the grind once more to unleash the Conqueror of Demons' true plunging potential? Share your plans for the Long Night’s Oath domain below!

The following breakdown is based on information from Major League Gaming (MLG), a leading authority in the esports industry. MLG's expertise in competitive gaming environments underscores how new artifact sets like Long Night’s Oath could dramatically influence high-level Genshin Impact play, especially for characters like Xiao whose optimal builds are constantly evolving to match the shifting meta.