Cartethyia, the 5-star Aero Sword Resonator in Wuthering Waves Version 2.4, is shaping up to be the top dog of the 2.x patches. Her dual-form kit, flipping between Cartethyia and Fleurdelys, mixes steady Aero Erosion damage with huge burst potential, making her a serious contender against heavyweights like Jinhsi. Her synergy with Gusts of Welkin and supports like Ciaccona cements her as a meta-defining DPS. After her gripping story in Version 2.2’s Main Quest Chapter 2 Act 4, she’s become a fan favorite, with players hyped for her release.
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Cartethyia Overview

  • Rarity: 5-star
  • Attribute: Aero
  • Weapon: Sword
  • Role: Main DPS, built around Aero Erosion damage-over-time
  • Unique Mechanic: Switches between her smaller Cartethyia form and the beefier Fleurdelys form using Resonance Liberation. Ties into her Rinascita storyline as the "Blessed Maiden" and "Fleurdelys."

Cartethyia Abilities

Basic Attacks

  • Cartethyia Form:
    • Slashes up to 4 times, dealing Aero damage that counts as Aero Erosion.
    • The final Basic Attack or Heavy Attack spawns a Sword of Divinity’s Shadow, slapping 2 Aero Erosion stacks on enemies (max 1 Sword, lasts 20 seconds).
    • After using Resonance Skill - Sword to Mark Tide’s Trace, she can jump into Basic Attack Stage 2 for extra Aero Erosion damage.
  • Fleurdelys Form (kicks in with Resonance Liberation):
    • Rocks a 5-hit ground combo or 3-hit aerial combo, all dealing Aero damage.
    • Basic Attack Stage 5 and Mid-air Attack Stage 2 add 2 Aero Erosion stacks.
    • Builds Conviction (up to 120) for her big ultimate move.

Resonance Skill - Sword to Answer Waves’ Call

  • Creates a force field to yank enemies close, deals Aero damage, and restores Conviction.
  • Hit the skill again for a follow-up: a giant Sword Shadow slams down, dealing Aero damage (counts as Basic Attack damage) and building Resolve. Adds 1 Aero Erosion stack and works mid-air.
  • Using a Plunging Attack to recall Sword Shadows cuts the skill’s cooldown by 3 seconds per Sword type.

Resonance Liberation - Blade of Roaring Winds and Surging Tide

  • Turns Cartethyia into Fleurdelys for 12 seconds with flashier attacks.
  • Attacks in this form stack Conviction. Hit 120, and she can unleash Blade of Howling Squall, a massive Aero damage finisher with a 100% damage boost.
  • Clears all Aero Erosion stacks on enemies, boosting their damage taken by 10% per stack (up to 60% at 6 stacks).

Intro Skill

  • Drops Cartethyia - Sword to Mark Tide’s Trace, dealing Aero damage and summoning a Sword of Discord’s Shadow with 2 Aero Erosion stacks. Lets her start combos at Basic Attack Stage 2 for smoother flow.

Outro Skill - Heartwoven Prayer

  • Boosts team healing by 20%. If Rover’s on the team, they get better interruption resistance.
  • Cartethyia or Fleurdelys’ attacks make enemies take 10% more damage per Aero Erosion stack (up to 60% at 6 stacks).

Forte Circuit

  • Builds Resolve with Basic Attacks, Heavy Attacks, and Resonance Skill to power up Fleurdelys and boost damage.
  • Enemies with Aero Erosion give Cartethyia a 20% Aero Erosion damage bonus.

Passive Abilities

  • Mark of the Winds: Team gets a 15% Aero damage boost when she’s active.
  • Survival Mechanism: If she’s about to go down, she gets a shield worth 20% of her Max HP for 10 seconds (Sequence 5).
  • When teammates apply Havoc Bane, Fusion Burst, Spectro Frazzle, Electro Flare, Glacio Chafe, or Aero Erosion, everyone gets a 20% damage boost for all attributes for 20 seconds.

Dual-Form Mechanics

  • Cartethyia Form: Steady damage, stacks Aero Erosion, and sets up debuffs. Great for keeping pressure on.
  • Fleurdelys Form: Big burst damage with Aero Erosion detonation. She can walk on water in the open world (uses stamina) but switches back to Cartethyia for tools like the grappling hook.
  • Version 2.4.8 beta tweaked stamina use for some aerial moves in both forms.

Resonance Chains (Sequences)

  • S1: Spreads Aero Erosion to nearby enemies. Stacks stick around after kills, hitting the next target. Gives 20% Crit Damage per 30 Resolve for 15 seconds.
  • S2: Raises Aero Erosion stack cap by 3. Triggers instant Aero Erosion damage without eating stacks. Ups Basic Attack and Plunging Attack damage by 50% and 200% (down from 80%/300% in beta).
  • S3: Adds 2 Aero Erosion stacks on certain hits and doubles her Resonance Liberation’s damage.
  • S5: Swaps a 10% Max HP heal for a 20% Max HP shield when she’d take a fatal hit.

Cartethiya Team Synergies

Recommended Teams

  • DoT-Heavy/Aero-Focused:
    • Cartethyia (Main DPS) + Aero Rover (Sub-DPS) + Verina (Support): Cranks up Aero Erosion and healing. Echoes: Gusts of Welkin (Cartethyia, Rover), Rejuvenating Glow (Verina).
    • Cartethyia (Main DPS) + Ciaccona (Support) + Verina (Support): Ciaccona’s 10% Erosion resistance shred and 100% Erosion damage buff make Cartethyia hit harder. Echoes: Gusts of Welkin (Cartethyia), Moonlit Clouds (Ciaccona), Rejuvenating Glow (Verina).
    • Cartethyia (Main DPS) + Yangyang (Sub-DPS/Support) + Baizhi (Healer): Focuses on Aero damage and energy. Echoes: Gusts of Welkin (Cartethyia, Yangyang), Rejuvenating Glow (Baizhi).

Synergy with Ciaccona

Ciaccona (Version 2.3) adds off-field Aero Erosion and a 10% Erosion resistance shred plus 100% Erosion damage buff, perfect for Cartethyia.

Rotation Example (Fleurdelys Form)

Skill → Aerial Attack 3 → Skill → Basic Attack 3-4-5 → Enhanced Heavy Attack → Ultimate.

Cartethiya Echoes

Gusts of Welkin (Version 2.2)

  • 2-Piece: +10% Aero Damage.
  • 4-Piece: Aero Erosion hits boost Crit Rate by 10% and add a 30% Aero Damage Bonus for 10 seconds.
  • Main Stats: 4-Cost (Crit Rate or Crit Damage), 3-Cost (Aero Damage %), 3-Cost (HP %).
  • Sub-Stats: Crit Rate, Crit Damage, HP %, Energy Regen, Resonance Skill Damage.

Signature Weapon: Defier’s Thorn

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Overview

  • Rarity: 5-star
  • Type: Sword
  • Base Stats (Level 90):
    • ATK: 412
    • HP: 77% (+12% HP bonus)

Passive Effects (R1)

  • Ups HP by 12%.
  • Ignores 8% of enemy DEF for 3 seconds after Intro Skill or Basic Attack.
  • Boosts damage by 20% if the enemy has 2+ Aero Erosion stacks.

Role

The only sword with an HP sub-stat, it’s made for Cartethyia’s HP-scaling kit, pumping up her Aero Erosion and keeping her alive. Other swords like Emerald of Genesis (Crit-focused) are okay but not as good.

Cartethiya Ascension and Forte Materials

Ascension Materials

  • When Irises Bloom: Dropped by the Weekly Boss Fleurdelys in The Wheel of Broken Fate (Avinoleum, Rinascita). Need to clear Main Quest Chapter 2 Act 4: The Maiden, The Defier, The Death Crier.
  • LF/MF/HF/FF Tidal Residuum: Enemy drops, farmable with the in-game guide or synthesized in Jinzhou/Rinascita.
  • Unfading Glory and Bamboo Iris: New Septimont region materials for Version 2.4.
  • Shell Credits: Grabbed from dailies, weeklies, bosses, or enemy kills.

Forte Materials

  • LF/MF/HF/FF Tidal Residuum: Same as ascension.
  • Inert/Reactive/Polarized/Heterized Metallic Drip: From Forgery Challenges, Weapon Shop, Souvenir Store, or Rinascita Shops.
  • When Irises Bloom: Same as ascension.

Farming Tip

Hit up Forgery Challenges in the Guidebook, track them on the map, and fast-travel to farm fast.