Genshin Impact Varesa Long Night’s Oath Build: Best 4‑Piece Artifact Setup in 5.5

If you want to min‑max Varesa in Genshin Impact Version 5.5, her best artifact setup for raw damage is a full 4‑piece Long Night’s Oath set with ATK% / Electro DMG / CRIT main stats and strong offensive substats. This build is aimed at PC and console players who lean into her Plunging Attacks in solo play or coordinated teams and are willing to invest resin into a newer, less efficient domain.

In practical testing and community theorycrafting, 4‑piece Long Night’s Oath typically edges out or matches 4‑piece Obsidian Codex for Varesa, because she can easily stack the set’s Plunging Attack bonus through her normal Skill → Charged → Plunge gameplay loop. The gap isn’t massive at equal substats, but if your goal is “best‑in‑slot for plunge damage Varesa” in 5.5 and beyond, this is the setup you aim for.

For most mid‑to‑late game players, the simple answer is: build 4‑piece Long Night’s Oath if you care about peak performance and can tolerate inefficient farming, and fall back to 4‑piece Obsidian Codex or mixed 2‑piece sets if your substats are much better there.

Quick reference: How to build 4‑piece Long Night’s Oath Varesa

1. Farm the Long Night’s Oath domain introduced in Version 5.5 until you have 4 usable pieces.

2. Run ATK% sands, Electro DMG Bonus goblet, and a CRIT Rate or CRIT DMG circlet depending on your weapon and current ratios.

3. Prioritize substats in this order: CRIT Rate / CRIT DMG, ATK%, then Energy Recharge until you comfortably burst on rotation.

4. Make sure your rotation actually stacks Long Night’s Oath: Skill into Charged Attack, then Plunge, and keep attacking to maintain stacks.

5. Only swap back to Obsidian Codex or 2‑piece mixes if their substats clearly outperform your Long Night’s Oath pieces.

Why Long Night’s Oath is Varesa’s best artifact set in 5.5

The short version: Long Night’s Oath is built for plunge‑centric characters, and Varesa is one of the best examples of that playstyle in Version 5.5. The 2‑piece bonus increases Plunging Attack damage by 25%, and the 4‑piece effect adds stacking Plunge damage when you hit enemies with Plunging Attacks, Charged Attacks, or Elemental Skills.

Varesa’s kit naturally weaves all three of those actions into her core combo. KeqingMains confirms she can “easily stack” the 4‑piece effect up to a total 100% Plunge DMG Bonus, which is exactly what you want if most of your damage comes from mid‑air body slams. Game8 and several community guides echo that 4‑piece Long Night’s Oath is her premier damage option when built properly.

For context, this recommendation is specifically for PvE content on PC and consoles in Version 5.5 and later, where you have the camera control and frame stability to consistently line up plunges. On mobile, the set is still strong, but the comfort of landing every plunge cleanly may vary based on your device and controls. (If you cover multiple platforms, this is worth calling out in your broader Genshin build hub as well.)

Long Night’s Oath vs Obsidian Codex on Varesa

If you already have a good Obsidian Codex set, you might wonder if it’s worth swapping. The answer depends on how far you’re willing to chase small damage gains.

Here’s a high‑level snapshot of how the two sets compare for Varesa:

KQM notes that Long Night’s Oath generally performs “better to around equal” to 4‑piece Obsidian Codex, depending on your buffs, weapons, and team comp. Community testing lines up with this, with some players reporting a small 0–7% damage edge for Long Night’s Oath over Obsidian Codex when everything lines up.

The catch is resin efficiency. Long Night’s Oath shares a domain that isn’t especially rewarding for broad account progression, so KQM explicitly labels it as a resin‑inefficient target for most players compared to Obsidian Codex. That’s why a lot of experienced accounts stay on a strong Obsidian Codex set and only swap once they’ve rolled genuinely better Long Night’s Oath pieces.

Player insight: in practice, the real power spike is not “Codex to Long Night’s Oath at equal substats,” it’s “badly rolled set to a well‑rolled set,” regardless of which 4‑piece you’re on. If your Long Night’s Oath pieces are mediocre while your Codex set is cracked, you’ll often see better real‑world performance staying on Codex.

Recommended main stats and substats for Varesa with Long Night’s Oath

For a standard 4‑piece Long Night’s Oath Varesa, theorycrafters and major guides converge on the same main stat setup:

• Sands: ATK%

• Goblet: Electro DMG Bonus, with ATK% as a backup if you’re oversaturated on DMG% from buffs and weapons

• Circlet: CRIT Rate or CRIT DMG, whichever balances your ratio with your weapon

KQM’s stat priority is Energy Recharge up to requirement, then CRIT, then ATK%, and Elemental Mastery if you’re leaning into Aggravate‑style reactions. Game8 and other guides largely match this, with Game8 specifically pointing out that Long Night’s Oath can stack Plunge damage up to 100%, making offensive main stats extremely valuable.

Substat priorities are straightforward:

• CRIT Rate / CRIT DMG

• ATK%

• Energy Recharge until your Burst feels comfortable in your rotation

• Elemental Mastery mainly for Aggravate builds

HoYoLAB community guides stress that Electro DMG goblet should remain the default unless your account already has strong DMG% from multiple sources and your best piece happens to be an ATK% goblet with much better rolls.

How to actually play around Long Night’s Oath stacks

Knowing the set is good is one thing; playing around its mechanics is another. Long Night’s Oath grants stacking Plunging Attack bonuses when you hit enemies with Plunging Attacks, Charged Attacks, or Elemental Skills, up to a cap that translates into roughly double Plunge damage at five stacks.

For Varesa, that means you want a rotation that ticks those boxes quickly without wasting Nightsoul points or messing up team buffs. KQM outlines basic combo structures like Skill → Charged → Plunge and notes that Varesa’s Charged Attack is a key part of both her damage and Long Night’s Oath stacking. Game8 highlights that her kit’s mix of Skill, Charged, and Plunges makes stacking the set “exceptionally easy” in normal play.

In real fights, you’ll typically:

• Open with your support buffs and debuffs.

• Swap to Varesa, press Skill, then quickly go into the Charged → Plunge sequence.

• Stay on‑field long enough to maintain stacks during your burst window, then rotate off.

The exact timing will depend on your teams and weapon, but the key is consistency: as long as you hit Skill and Charged on enemies before plunging during your main damage window, Long Night’s Oath will do its job.

When to use alternatives and mixed sets

Not every account can justify full resin investment into Long Night’s Oath right away. Major guides and player testing agree on a few safe alternatives:

• 4‑piece Obsidian Codex for a more efficient domain and strong on‑field CRIT and DMG bonuses for Nightsoul characters like Varesa.

• 2‑piece mixes such as Long Night’s Oath + Electro DMG or ATK% sets while you’re still farming, which Game8 explicitly recommends as transitional options.

• Other offensive 4‑piece sets as placeholders if they have significantly better substats, with the understanding that they’re sidegrades at best for plunge‑focused Varesa.