Version 6.4’s Stygian Onslaught is live from March 4 to April 7, 2026 — and the Luna V rotation has brought back some nightmarish bosses alongside a chaotic new duck-themed menace. Here’s your complete team guide to clear all three battlefields, earn Primogems, and grab those weapon skins.
Table of Contents
Genshin Impact Luna V Boss Lineup & Weaknesses at a Glance
| Boss | Key Weakness | Best Reaction |
|---|---|---|
| Hexadecatonic Mandragora | Pyro / Electro | Break gauge → splits into 10 spores — use AoE groupers |
| Knuckle Duckle | Electro / Lunar-Charged | Destroy stamping devices first to shred its HP |
| Secret Source Automaton: Overseer Device | Cryo application | Cool down its laser gauge — Skirk/Escoffier core |
Best Teams for Each Boss
🐛 Boss 1 — Hexadecatonic Mandragora
Premium pick: Varka / Durin / Venti / Sucrose Budget alternative: Mavuika / Xilonen / Citlali / Bennett
The Mandragora begins with a brutal +300% All RES buff. Focus Pyro and Electro to drain its gauge first — then obliterate the 10 spores it splits into using a reliable AoE grouper like Venti or Sucrose.
🦆 Boss 2 — Knuckle Duckle
Premium pick: Flins / Ineffa / Columbina / Sucrose Budget alternative: Varesa / Furina / Iansan / Barbara
Prioritise the stamping devices the moment they spawn — AoE Lunar-Charged or Electro-Charged wipes them out fast. Once defeated, the devices launch into the boss and shred a massive chunk of its HP and shield. Only then unleash your main DPS. Ineffa’s shield is particularly valuable here since Knuckle Duckle moves relentlessly. 🐤
🤖 Boss 3 — Secret Source Automaton: Overseer Device
Premium pick: Skirk / Escoffier / Furina / Shenhe Budget alternative: Wriothesley / Escoffier / Kokomi / Kazuha
When the Automaton goes stationary and fires lasers, it gains massive elemental RES. Your only counter is sustained Cryo application to drain the cooling gauge — Escoffier is hands down the MVP here as an all-in-one Cryo support. Without consistent Cryo, the laser becomes devastating.
Rewards Worth Grinding For
At Difficulty 1–3, you earn 450 Primogems total. Higher tiers unlock Dust of Enlightenment and artifact farming during the first 10-day Disturbance Outbreak window (Adventure Rank 45+ required). The top prize at Difficulty 6 is an exclusive Weapon Skin — but this is solo-only and requires fully independent three-team builds. 💎
For detailed character builds, artifact recommendations, and daily Genshin Impact patch updates, check out TechnoSports’ Genshin Impact hub.
Want team comp updates as the meta shifts over the next five weeks? Bookmark TechnoSports for the latest Genshin 6.4 coverage. ⚡
FAQs
Q: What are the best teams for Genshin Impact Luna V Stygian Onslaught in version 6.4?
A: For Mandragora, use Varka/Durin/Venti/Sucrose; for Knuckle Duckle, use Flins/Ineffa/Columbina/Sucrose; for the Automaton, use Skirk/Escoffier/Furina/Shenhe for best results.
Q: How long does Luna V Stygian Onslaught last in Genshin Impact 6.4?
A: The Luna V cycle runs from March 4 to April 7, 2026, with the artifact-farming Disturbance Outbreak window active only for the first 10 days.
