Here we are again—another major update, another set of bosses that’ll drain your resin faster than you can say artifact farming. Genshin Impact Version 6.0 Luna I drops September 10, 2025, and honestly? These two new world bosses in Nod-Krai are something else entirely.
I’ve been covering boss mechanics for years now, but these aren’t your typical hit it till it dies encounters. We’re talking mechanically complex fights with exclusive ascension materials for three new characters: Lauma, Flins, and Aino.
New World Bosses Overview
Radiant Moonfly: The Lunar Shadow
Tucked away in Hiisi Island’s cave system, this butterfly-shaped nightmare packs 887,360 HP at Level 90. But here’s the kicker—it doesn’t just hit hard. This thing applies what might be the most punishing debuff I’ve seen in the game: -40% damage dealt, -40% healing received, -100% Crit Rate, plus continuous HP drain.
Sounds brutal? It is. But there’s a counter-play that actually makes this fight fascinating from a design perspective. Heal any character to maximum HP and boom—debuff gone, replaced by a sweet +15% Crit Rate and +50% Damage Dealt buff.
The resistances tell their own story: 70% to Pyro and Dendro (ouch for Hu Tao mains), but only 10% to everything else. High-level variants? We’re looking at 3,327,601 HP and 19,698 ATK. Yeah, you read that right.
Knuckle Duckle: The Mechanical Guardian
Now this one’s weird in the best possible way. Located in central Paha Isle, Knuckle Duckle actually functions as an interactive NPC before you start the fight. It’s like HoYoverse finally decided to give world bosses some personality.
The minion mechanic here is genuinely unique—this boss summons five Duck minions while cranking its own resistances up to 80%. Each minion needs exactly 10 Electro-Charged or Lunar-Charged hits to go down. Not damage—hits. That’s a crucial distinction that changes everything about team building.
Here’s where it gets interesting: those minions have 90% Hydro resistance but only 10% Electro resistance. Destroy all five and you’ll consume 25% of the boss’s HP while dropping its resistances to a manageable 10%. At high levels, we’re talking 5,615,327 HP and 14,773 ATK.
Character Material Requirements
Lauma: Dendro Catalyst (5-star)
Ascension to Level 90: 46 Lightbearing Wings, 168 Moonfall Silver, Nagadus Emerald gems (1/9/9/6), 420,000 Mora
Talents to 10/10/10: 18 Eroded Scale-Feathers, Moonlight talent books (9/63/114), 4,957,500 Mora, 3 Crowns
Flins: Electro Polearm (5-star)
Ascension to Level 90: 46 Precision Kuuvahki Stamping Die, 168 Frostcup Flower, Vajrada Amethyst gems (1/9/9/6), 420,000 Mora
Talents to 10/10/10: 18 Ascended Sample: Queen, Vagrancy talent books (9/63/114), 4,957,500 Mora, 3 Crowns
Aino: Hydro Claymore (4-star, Free)
Ascension to Level 90: 46 Precision Kuuvahki Stamping Die, 168 Portable Bearing, Varunada Lazurite gems (1/9/9/6), 420,000 Mora
Talents to 10/10/10: 18 Silken Feathers, 4,957,500 Mora, 3 Crowns
Aino’s obtainable through the Version 6.0 Archon Quest, which is refreshing—we need more free characters. For those planning to pull for the others, Buy Genesis Crystals Online through BitTopup offers competitive pricing and secure transactions.
Farming Efficiency and Strategy
The Resin Reality Check
World Level 8 gives you 2.55 boss materials per 40 resin run. Do the math: 18 boss clears per character equals 1,840 resin. That’s 12-15 days of natural regeneration or 31 Fragile Resin if you’re impatient.
The 5-star Gemstone drop rate sits at 1.4%—so don’t hold your breath for those.
Team Compositions That Actually Work
Radiant Moonfly:
Survival comp: Bennett, Zhongli, Ganyu, Kazuha (my personal recommendation for consistency)
Burst comp: Hu Tao, Kokomi, Sucrose, Thoma (if you can manage the healing windows)
Avoid: Any Pyro or Dendro DPS—that 70% resistance isn’t worth fighting
Knuckle Duckle:
Optimal: Ineffa, Yelan, Kazuha, Bennett (if you’ve got the new characters)
Budget: Fischl, Xingqiu, Bennett, Sucrose (works surprisingly well)
F2P: Lisa, Barbara, Kaeya, Traveler (yes, Lisa actually shines here)
Efficient Farming Route
Start with Knuckle Duckle at Paha Isle, then teleport to Radiant Moonfly at Hiisi Island. Travel time’s about 45 seconds with 10-second respawn timers. Once you’ve unlocked the waypoints, that drops to 30 seconds.
Advanced Combat Mechanics
Knuckle Duckle: It’s All About the Reactions
Forget raw damage—this fight’s about Electro-Charged reactions. That 2-second minion summon window? Perfect for setting up your burst rotations. Target multiple minions simultaneously during the 80% resistance phase, and you’ll clear them faster than going one-by-one.
Radiant Moonfly: Timing Is Everything
Managing those debuff-buff cycles through precise healing timing separates good players from great ones. Watch for that 0.4-second wing slash telegraph—dash cancel saves lives. Maximize your DPS during those +50% damage windows after healing to full HP.
Resource Planning Deep Dive
The Full Investment Picture
Building a character from scratch costs 7.1 million Mora, 419 Hero’s Wit, and 2,500 Original Resin (artifacts not included—we all know that’s another nightmare entirely). Weekly boss materials need a minimum 18-week farming period.
What You Can Pre-Farm Right Now
Weekly boss materials from existing domains
Talent books from current Domain of Mastery rotations
Common enemy drops from Fatui Oprichniki (for Lauma) and mechanical enemies (for Flins/Aino)
Planning to pull? Genshin Impact Top Up through BitTopup provides fast delivery and competitive pricing for Genesis Crystal purchases.
Special Features Worth Noting
Unique Interactions That Matter
Knuckle Duckle isn’t just a boss—it’s got dialogue options, shop access, and special interactions when you approach with Aino or Ineffa. The shop contains cosmetics for both characters, which is a nice touch.
Material Efficiency Bonus
Here’s something interesting: Radiant Moonfly drops both Nagadus Emerald (Dendro) and Agnidus Agate (Pyro) gemstones despite having 70% Pyro resistance. Dual farming value? I’ll take it.
Release Timeline
Version 6.0 launches September 10, 2025 (pre-install starts September 8). Phase 1 runs September 10-30 (expecting Lauma’s banner), Phase 2 goes September 30-October 21 (Flins likely here). Aino’s available immediately through the Archon Quest.
For character acquisition strategy, Genshin Top Up Online via BitTopup offers secure transactions and competitive rates.
FAQ
How many boss materials does each character need?
46 materials each. Lauma needs Lightbearing Wings, while both Flins and Aino need Precision Kuuvahki Stamping Dies.
What’s the most efficient farming route?
Knuckle Duckle first, then Radiant Moonfly. 45-second travel time, 18 runs per character at 1,840 total resin.
Best team compositions?
For Radiant Moonfly: strong healers, avoid Pyro/Dendro DPS. For Knuckle Duckle: rapid Electro application characters like Fischl or Lisa work best.
Can I pre-farm anything?
Weekly boss materials, talent books, and common enemy drops are available now. Boss-specific materials only drop after September 10, 2025.
Are there special boss interactions?
Knuckle Duckle starts non-hostile with dialogue and shop access. Aino and Ineffa trigger special interactions and additional shop inventory.
How complex are these compared to other world bosses?
Significantly more complex. Both require precise debuff management (Radiant Moonfly) and reaction mastery (Knuckle Duckle)—they’re basically mini-raid encounters.