Clair Obscur: Expedition 33 has taken the RPG world by storm with its breathtaking visuals, intricate turn-based combat, and deeply customizable character builds. Among the game’s standout characters is Lune, the barefoot sorceress whose elemental mastery and Stain-based mechanics make her a fan favorite. While Lune shines as a healer or support in the early game, her true potential emerges in the endgame, where a carefully crafted build can transform her into an unstoppable force capable of decimating even the toughest bosses in a single turn. This article dives into the most overpowered endgame Lune build, focusing on a Dark Stain-centric strategy that maximizes damage, synergizes with her team, and trivializes the game’s most challenging encounters.

Understanding Lune’s Core Mechanics

Lune’s combat prowess revolves around her unique Stain system, which allows her to generate and consume elemental Stains—Fire, Ice, Lightning, Earth, and Light—to enhance her skills. Each skill she uses generates a Stain corresponding to its element, and consuming specific Stains can amplify the damage, effects, or utility of subsequent skills. For example, using Ice Stains can boost Fire skills, while Light Stains act as wildcards, amplifying any skill. Lune can hold up to four Stains at a time, making strategic planning essential to maximize her output.

In the early game, Lune often serves as a healer or utility caster, leveraging skills like Revitalization or Healing Light to keep the party alive. However, as players progress into Act 3 and New Game+ (NG+), her access to powerful weapons, skills, Pictos, and Luminas unlocks her potential as a devastating damage-dealer. The endgame build we’re exploring here focuses on a Dark Stain strategy, which, while not as common as Fire or Lightning builds, offers unparalleled burst damage and versatility against endgame bosses like the Chromatic Lzando or the Lampmaster.

The Overpowered Dark Stain Build

This build is designed to exploit Lune’s ability to generate Dark Stains with her best-in-slot weapon, Scaverim, and chain high-damage skills like Elemental Genesis and Hell to wipe out enemies in a single rotation. By stacking critical chance, AP regeneration, and Stain synergy, this build ensures Lune can unleash devastating area-of-effect (AoE) attacks while maintaining sustainability. Here’s the breakdown:

Weapon: Scaverim

Scaverim is Lune’s ultimate endgame weapon, obtainable after defeating the Chromatic Lzando at Siren’s Dress. Its ability to generate Dark Stains, which can increase skill damage by up to 300%, makes it the cornerstone of this build. At Level 4, Scaverim boosts skill damage by 50%, and at Level 20, it applies Burn on critical hits, synergizing with Lune’s status-effect Pictos. Its Vitality scaling enhances Lune’s survivability, allowing her to withstand the high-damage output of endgame enemies.

Key Skills

Elemental Genesis: This is Lune’s most destructive skill, consuming four unique Stains (or Light/Dark Stains) to deal massive elemental damage to all enemies. When paired with Dark Stains from Scaverim, it becomes a one-shot nuke against most bosses.
Hell: A late-game multi-hit skill that delivers devastating Fire damage. When empowered by Dark Stains, Hell can wipe out entire enemy groups in a single turn, especially if critical hits trigger Burn.
Elemental Trick: This skill generates one of each Stain type, setting up Elemental Genesis instantly. It’s critical for ensuring Lune can fire off her ultimate attack without delay.
Thermal Transfer: A low-cost Ice skill that generates 4 AP when used against a Burning target. This ensures Lune can maintain her AP pool for chaining high-cost skills.
Electrify: A cheap Lightning skill that generates two Lightning Stains and applies status effects, setting up synergies with other party members like Maelle.
Rebirth: A safety net for tough fights, allowing Lune to revive allies with significant health and AP, ensuring the party stays in the fight.

Pictos and Luminas

Pictos and Luminas are passive abilities that enhance Lune’s performance. For this build, prioritize the following:

Critical Burn: Increases critical hit chance by 25% against Burning enemies, amplifying Hell and Elemental Genesis.
Burn Affinity: Boosts damage by 25% against Burning targets, stacking with Scaverim’s Burn application.
Cheater: Grants Lune an extra turn after using Elemental Genesis, allowing her to follow up with Hell or Thermal Transfer.
Dodger: Provides 1 AP per perfect dodge, ensuring Lune can keep casting high-cost skills.
Burning Shots: Gives a 20% chance to apply Burn with Free Aim shots, setting up Thermal Transfer and Burn Affinity.
Energizing Heal: Grants AP when using healing skills like Rebirth, maintaining Lune’s momentum in prolonged fights.

Attributes

For attributes, prioritize Vitality and Luck in Act 3, as Scaverim scales with Vitality, and Luck boosts critical hit chance, which is crucial for triggering Scaverim’s Burn effect and maximizing Elemental Genesis. Allocate remaining points to Agility for faster turns and Defense to offset the negative effects of some Pictos. A sample spread at level 60 (180 points) might look like:

Vitality: 80
Luck: 60
Agility: 30
Defense: 10

Party Synergy

Lune’s Dark Stain build shines when paired with characters who amplify her status effects and AP generation. A recommended endgame party includes:

Maelle: Her Fire-based skills and Virtuose Stance apply Burn, setting up Thermal Transfer and Burn Affinity. Her Medalum weapon enhances party-wide Burn damage.
Verso: His ability to Mark targets with Simoso synergizes with Lune’s Burning Mark Picto, boosting her damage against Marked enemies.
Monoco: As a support, Monoco’s Joyaro weapon buffs party speed and applies Break damage, giving Lune more opportunities to act before enemies.

Why This Build Is Overpowered

The Dark Stain build’s strength lies in its ability to deliver astronomical damage in a single turn. By starting combat with Elemental Trick to generate four Stains, Lune can immediately cast Elemental Genesis for massive AoE damage. The Cheater Lumina grants an extra turn, allowing her to follow up with Hell or Electrify to apply Burn and regenerate AP via Thermal Transfer. Scaverim’s Dark Stains amplify all skills by up to 300%, and its critical hit Burn application triggers Critical Burn and Burn Affinity, creating a feedback loop of escalating damage. This rotation can trivialize even the toughest endgame bosses, such as the Lampmaster, by exploiting their elemental weaknesses and status vulnerabilities.

Moreover, Lune’s versatility ensures she’s not a one-trick pony. Rebirth and Energizing Heal allow her to pivot to a support role if the party takes heavy damage, while Electrify and Thermal Transfer maintain her AP economy, making her sustainable in prolonged fights. The build’s reliance on critical hits and status effects also makes it highly adaptable, as players can tweak skills or Pictos to target specific enemy weaknesses.

How to Acquire the Build Components

Scaverim: Defeat the Chromatic Lzando at Siren’s Dress in Act 3. This boss is challenging, so ensure your party is well-equipped with Burn and Lightning skills to exploit its weaknesses.
Skills: Unlock Elemental Genesis and Hell by progressing through Lune’s skill tree in Act 3. Prioritize AP-cost reduction nodes to make these skills more accessible.
Pictos and Luminas: Critical Burn and Burn Affinity are available from Gestral traders in Act 2 and 3. Cheater is a rare drop from endgame Mimes, so farm these enemies in NG+.
Attributes: Respec Lune’s attributes at the camp once you acquire Scaverim to focus on Vitality and Luck. Use attribute points from leveling to fine-tune Agility and Defense.

Tips for Maximizing the Build

Master Stain Management: Always use Elemental Trick to set up Elemental Genesis. Monitor your Stain count to avoid wasting them on low-impact skills.
Exploit Enemy Weaknesses: Use Electrify to probe for elemental weaknesses, then tailor your rotation to consume the appropriate Stains.
Perfect Dodges: Equip Dodger and practice dodge timing to generate extra AP, ensuring Lune can chain skills without interruption.
Coordinate with the Party: Have Maelle apply Burn early to trigger Thermal Transfer and Burn Affinity, and use Verso’s Marks to boost Burning Mark.
Farm Luminas: If you’re struggling to acquire Cheater, check out Lumina farming guides (like those on YouTube) to optimize your drop rates.

Addressing Potential Criticisms

Some players argue that Lune’s Dark Stain build is too complex or reliant on RNG due to critical hit dependence. While it’s true that critical hits are central to the build, Scaverim’s Level 4 passive (100% crit chance with four Stains) mitigates this issue, making the build reliable in practice. Others may prefer a Fire or Lightning build for simplicity, but the Dark Stain build’s raw damage output and versatility make it unmatched for endgame content. The learning curve is steep, but mastering Lune’s Stain rotations is immensely rewarding.

Conclusion

Lune’s Dark Stain build is the epitome of overpowered in Clair Obscur: Expedition 33. By combining Scaverim’s Dark Stain generation, Elemental Genesis’s nuke potential, and a suite of synergistic Pictos and Luminas, this build turns Lune into a one-woman army capable of obliterating endgame bosses in a single turn. Whether you’re tackling NG+ or facing the game’s toughest challenges, this build ensures Lune remains the backbone of your party. So, equip Scaverim, stack those Stains, and unleash elemental chaos—your enemies won’t know what hit them.