Complete Cartethyia S0 Build Guide in Wuthering Waves – Best F2P Setup

 


Want to master Cartethyia in Wuthering Waves, even at Sequence 0?

You're in the right place. This guide covers everything you need to know about using Cartethyia effectively, including her mechanics, best team setups, optimal rotations, and recommended builds for both free-to-play and invested players.

With her unique Aero Erosion scaling and dual-form gameplay—switching between Cartethyia and her powerful Fleurdelys state—she delivers high damage while remaining flexible in most team comps. Whether you're just pulling for her or looking to optimize her performance, this guide simplifies her kit and shows how to get the most value out of her right now.

Understanding Cartethyia's Core Mechanics

Cartethyia is a unique DPS unit in Wuthering Waves, scaling primarily off HP and excelling with Aero Erosion mechanics. What sets her apart is her ability to switch between two forms: her base state (Cartethyia) and her enhanced form (Fleurdelys), each with a distinct skill set. Her playstyle revolves around creating and absorbing three sword types—Divinity, Discord, and Virtue. These are summoned through Basic, Heavy, and Skill attacks and are essential for unlocking buffs in Fleurdelys form.

You can track each sword’s status via icons above her HP bar. When all three are collected and absorbed, Cartethyia gains significant bonuses upon transforming. Basic combos summon Divinity, Heavy attacks or Intro create Discord, and using her Skill spawns the Virtue sword while applying Erosion stacks. Mid-air plunges are key to absorbing swords quickly, especially since her Skill auto-launches her upward—allowing smooth transitions into plunges and maximizing uptime on buffs.




How Fleurdelys Changes the Game

Activating Cartethyia’s Resonance Liberation transforms her into Fleurdelys, consuming 50% of her max HP and initiating a 12-second Manifest state. This is where her true damage potential kicks in. If you’ve absorbed all three swords before transformation, she receives game-changing buffs. For instance, Discord enables Erosion stack ramping and AoE pressure, Divinity boosts Aero Erosion damage and reduces its interval, while Virtue grants crowd control and resistance to interruption.

Fleurdelys’ new moves also fill her Forte Bar via Conviction points. Once full, she can unleash her devastating Liberation finisher—a straight-line nuke that not only heals her by 50% of max HP but also scales based on Erosion stacks on enemies (up to 100% bonus damage). While Fleurdelys can remain active after Manifest ends, she’ll lose all bonuses, so maximizing her output during this window is crucial.

Fleurdelys Combat Flow and Rotations

Fleurdelys comes with a fully new set of combos designed for aerial and grounded pressure. She has a 5-hit Basic combo that integrates smoothly from various openers like Dodge Counters. Jumping triggers an upward cut, leading to a three-hit Air Combo. Holding the attack in air skips to the final strike, though the first two air hits generally deal more damage.

Her Skill can be tapped twice. The first use pulls enemies in and launches her into the air, while the second plunges her massive sword down, dealing heavy damage and enabling a follow-up Basic 3. The cool part? Using the Skill resets her Air Combo, allowing you to chain more aerial attacks for higher uptime. Her Enhanced Heavy Attack chains from regular Heavy Attacks and deals huge AoE damage—perfect for clearing mobs or boosting Conviction.


How to Optimize Her Rotation

Executing a strong combo loop is essential to maximize Cartethyia's output. Here’s a reliable sequence:

  • Start with Cartethyia’s Intro, then follow with Basic 2-4.

  • Use her Skill, immediately Plunge to absorb all swords.

  • Activate Resonance Liberation to become Fleurdelys.

  • Use Skill (tap once), do a full 3-hit Air Combo, then tap Skill again.

  • Use Basic 3-5, chain into Enhanced Heavy Attack, then finish with Liberation.

This loop enables maximum sword absorption, Conviction generation, and Erosion stack application. Keep in mind—Dodge Countering and adjusting combo timing mid-battle are necessary if you're interrupted. In AoE-heavy scenarios, Discord’s buff is especially valuable due to its rapid Erosion stacking on multiple enemies.

Cartethyia Build Priorities and Skill Upgrades

If you're building Cartethyia, focus on abilities that reflect her primary damage output—normal attacks and Forte skills. The ideal upgrade order is: Forte → Liberation → Normal Attack → Skill → Intro. Her damage is largely centered on her regular attack chains and Liberation finishers, so prioritize those early.

She performs best with high HP and Critical Rate/Crit DMG synergy. Since her output relies on Erosion effects, consistent critical hits help take full advantage of her built-in multipliers. Having some Aero Damage boosts also scales well with her Sword buffs and skill damage over time.


Top Weapon Picks for Cartethyia

  • Signature Weapon (Best): Comes with a 72% HP substat and a passive that increases damage taken by enemies with Erosion. It also reduces enemy defense and adds 20% DMG amp. This makes it roughly 20% better than the next option.

  • Red Spring (2nd Best): Only half of the passive is usable but still effective with the right team.

  • Emerald of Genesis (F2P Friendly): Slightly behind Red Spring in terms of performance.

  • Guardian Sword (Best 3-Star Option): Offers an HP substat and skill DMG boost. While basic, it's an excellent early-game F2P choice.

Given the high HP scaling and Erosion dependency, her demand for Critical Rate remains high, especially with her signature weapon, so manage your stats wisely.



Best Echoes and Stat Loadouts for Cartethyia

For Echoes, Windward Pilgrimage is her top set. When paired with the Cartethyia Echo, it offers a strong blend of Aero Damage and Critical Rate. The main Echo grants +20% Aero DMG, while the 5-piece set adds +40% Aero DMG and a +10% Crit Rate bonus after applying Erosion—something she does constantly.

Two top stat loadouts include:

  • 44111 Build: Prioritizes Crit Rate and Crit DMG on the 4-cost, and HP% on the 1-costs. This is her highest-performing setup if your substats are good.

  • 43311 Build: Offers slightly lower output but easier stat balancing. With Aero DMG% on 3-costs, this layout works better if your Crit Rate rolls are lacking.

If your substat rolls are inconsistent, it’s okay to double up on Crit Rate for reliability—this may lower max damage but increases stability in real combat.


Ideal Substats & Energy Regen Needs

When choosing substats, prioritize in this order:

  1. Crit Rate

  2. Crit Damage

  3. ATK%

  4. Bonus DMG to Basic Attacks & Liberation

For Energy Regen (ER), Cartethyia doesn't need much if she's on an Aero-heavy team. Just one ER roll is usually enough. In non-Aero comps, however, aim for 118% to 120% ER to maintain consistent access to her Liberation.

Best Teams for Cartethyia (S0 and Beyond)

Cartethyia thrives in Aero-element teams. The top-performing team includes:

  • Cartethyia (DPS)

  • Ciaccona (Support)

  • Aero Rover (Sub-DPS/Healer)

Ciaccona works best with the Gusts of Welkin set and Fleurdelys Echo for added synergy. Aero Rover should use the Rejuvenation Set to enhance healing and increase team ATK. This comp maximizes Erosion stacks and buffs Cartethyia’s overall damage. Aero Rover is particularly key because her Outro raises Erosion cap from 3 to 6 stacks, enabling Cartethyia to hit much harder thanks to her Inherent Skills.


Alternative F2P-Friendly Teams

If you don’t have Ciaccona, consider:

  • Cartethyia + Aero Rover + Shorekeeper

  • Or: Cartethyia + Shorekeeper + Sanhua (Moonlit Set)

Even Aalto becomes viable with the Static Mist pistols and S6 upgrades, offering an Outro that increases Aero DMG by 23%. While not as strong as premium options, these setups still offer decent Erosion stack application and survivability, especially if Aero Rover is built well.

Note: With more Sequences unlocked, Aero Rover's individual contribution increases, while Shorekeeper becomes less optimal over time.

Inherent Skills and Sequence Value Breakdown

Cartethyia’s Inherent Skills are built for team synergy and Erosion-based scaling:

  • Inherent Skill 1: Boosts healing received by the entire team by 20% and improves their resistance to interruption.

  • Inherent Skill 2: Increases enemy damage taken based on Erosion stacks.

    • 1–3 stacks: +30% damage taken

    • More than 3 stacks: +10% extra per stack (max 60% with 6 stacks)

This makes Erosion management crucial for squeezing out her max potential, especially in AoE or boss fights.




Sequence Investment Recommendations

If you're pulling copies, here’s what to prioritize:

  • S1: Instantly applies max Erosion to nearby enemies after a kill and grants up to +100% Crit DMG at full Conviction.

  • S2: Increases Erosion stack cap by +3 after transformation and applies 3 stacks immediately—huge boost.

  • S3: Enhances Fleurdelys' main damage skills and Liberation nuke—more consistent pressure.

  • S4: Team-wide +20% DMG buff after applying status effects—solid support value.

  • S5: Grants a revive and shield after a lethal hit—low-impact unless you're struggling with survivability.

  • S6: Major raw damage gains—mostly for high spenders or maxing out.

Best ROI for low spenders or F2P is S1 and S2, especially S2 if you're planning for harder content.

Conclusion: Should You Build Cartethyia at S0?

Cartethyia is absolutely viable at Sequence 0, especially when paired with Aero allies like Aero Rover. Her kit is flexible, high-damage, and scales with skill mastery rather than just raw investment. Even without top-tier gear or rare units, she can perform well in most content thanks to strong Erosion scaling and her HP-based durability.

Her dual-form system may seem complex at first, but once you understand how to manage sword absorption and Erosion stacking, she becomes a consistent and powerful DPS option. If you're F2P, focus on building Aero Rover and grabbing the Guardian Sword or Emerald of Genesis for solid performance. Overall, Cartethyia is a great pickup for both casual and invested players.


FAQ: Cartethyia Build & Mechanics

Q1: Is Cartethyia good at S0?
Yes, she's strong even without extra sequences. Her damage scales well from her base kit and team setup.

Q2: What’s her main damage source?
Her Normal Attacks, Fleurdelys’ skills, and Liberation finisher are the core damage sources.

Q3: What Echo set should I use?
Use Windward Pilgrimage with the Cartethyia Echo for Aero DMG and Crit Rate boosts.

Q4: Which weapon is best for F2P?
Guardian Sword (3-star) or Emerald of Genesis (Standard Banner 5-star) are great F2P options.

Q5: Does she need Energy Regen?
Not much. In Aero comps, one ER substat roll is enough. In off-element teams, aim for ~120% ER.

Q6: Who are her best teammates?
Ciaccona and Aero Rover are top picks. For budget teams, use Shorekeeper, Sanhua, or Aalto.

Q7: How do I manage her forms?
Absorb all three swords before transforming to Fleurdelys. Use aerial combos to build Forte and time her Liberation wisely.

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