CartethyiaBuild and Guide

At long last, the highly-anticipated Cartethyia is available to play in Wuthering Waves 2.4, and she does not mess around. Cartethyia is a 5-star Aero Sword DPS character whose primary role is to deal massive damage to enemies in a wide Area of Effect after she’s been fully buffed by the 2 other characters in your team. Best in a Hypercarry playstyle, but also functional in Quickswap team compositions, Cartethyia relies on the Aero Erosion mechanic to take her damage a step ahead of the competition.

As Cartethyia’s kit description is, to REALLY say the least, a long read… we’ll spare you all of the unnecessary details and instead exclusively tackle what we use in her rotation.

Something to note to start with, is that the entirety of Cartethyia’s damage is based on her HP. This makes building her certainly original, but also way more restrictive, as most Swords and Echo sets revolve around buffing ATK. This makes her a very selective DPS in general and is one of her main flaws — but we’re getting ahead of ourselves, so let’s start with her kit in the order of her rotation:

First of all, Cartethyia has two forms. Her Ultimate allows her to transform into Fleurdelys to gain a new kit, but before that, she needs to accumulate what’s known as “Sword Shadows”. There are 3 types of Sword Shadows, all of which enhance her kit in her Fleurdelys form where she will deal the overwhelming majority of her damage. All Sword Shadows acquired are visible on her Forte bar in her Cartethyia form. Their effects to Fleurdelys are as follows:

• Sword of Discord: Gained after using Cartethyia’s Resonance Intro, it raises the Aero Erosion stacks on all nearby enemies to whatever count is highest among the currently remaining enemies after using most of Fleurdelys’s important abilities. This has two effects: the first is keeping all enemies in range at the same amount of Aero Erosion, the second is refreshing the duration of Aero Erosion (so the stacks will never expire mid-rotation);

• Sword of Divinity: Gained after using Cartethyia’s Basic Attack 4, it amplifies Aero Erosion DMG by 50% and reduces the damage interval by 50% for enemies near Fleurdelys (meaning the damage is applied twice as fast effectively doubling the damage on top of 50% Amplification);

• Sword of Virtue: Gained after using Cartethyia’s Skill, it allows her to gain increased Interruption Resistance and generate a stagnation field after using her Basic Attack 4 in Fleurdelys form.

All of these Sword Shadows (aside from Sword of Discord in single-target scenarios, but it is really easy to acquire) are really important to obtain. However, another effect stacking up each Sword will have is enhancing Cartethyia’s Mid-Air Attack. Using this Mid-Air Attack summons all Sword Shadows to attack the enemy, inflicting higher damage and granting their effects to Fleurdelys. Hence, it is mandatory to cast this Mid-Air Attack every rotation to ensure Fleurdelys is as buffed as can be to deal the highest amount of damage possible. Besides, the damage on this ability isn’t bad, so increasing it further isn’t a bad idea in any context.

This means, to start with, we will do the following abilities:

• Intro Skill (This acquires Sword of Virtue);

• Basic 2, 3, 4 (Using Intro skill allows Cartethyia to start at Basic 2, this acquires Sword of Divinity);

• Resonance Skill (This acquires Sword of Discord);

• Mid-Air Attack (This consumes all Swords to grant their effects to Fleurdelys);

• Ultimate (This transforms Cartethyia into Fleurdelys).

It should be noted that Intro Skill and Resonance Skill each apply 2 stacks of Aero Erosion on the targets hit, while Basic Attack 4 applies 1 stack, for a total of 5 Aero Erosion stacks per rotation. The limit is naturally 3 stacks, however this can be increased via Aero Rover’s Outro skill and via Cartethyia’s Sequence 2 (each increasing the limit by 3). At most, Fleurdelys benefits from 6 Aero Erosion stacks being present on her targets. Via Cartethyia’s Inherent Skill, all damage dealt by Cartethyia and Fleurdelys on targets affected by Aero Erosion increases by 30% regardless of their stack count. For every stack above 3, she also gains an extra 10% Aero Erosion up to 30% at 6 stacks (for a total of 60% DMG Bonus). This gives her a tremendous amount of DMG Bonus, further adding on to the necessity to apply Aero Erosion on her targets.

Her other Inherent Skill increases healing to all characters in the team aside from herself by 20%, along with increasing their interruption resistance. She additionally gives 25 Forte points to Aero Rover if they are present in the team and cast their Ultimate - this however only sees real use if Aero Rover is swapped in the middle of Fleurdelys’s rotation (as otherwise, they will face Concerto Energy problems when trying to take advantage of this ability. However, if the player is able to manage that, it is a nice time save).

With that out of the way, let’s finally tackle her Fleurdelys form, called “Manifest” and establish the essentials:

• When transforming into Fleurdelys, Cartethyia immediately reduces her Max HP to 50% of its original value (unless her current HP is already equal to or below 50%). The Manifest state lasts for 12s.

• Fleurdelys gains a brand new kit with new Basic Attacks, 2 new Heavy Attacks, 2 new Resonance Skills, a new Forte bar called “Conviction” which allows her to cast her second Ultimate (the hardest-hitting ability she has), a brand new Intro Skill and certain attacks make her consume Aero Erosion instead of applying it.

• When using several key abilities, Fleurdelys will consume 1 stack of Aero Erosion to instantly deal the instance of damage it normally would’ve done.

• When using any ability, Fleurdelys restores a portion of Conviction, stackable up to 120. At 120 points, she is able to cast her second Ultimate, deal MASSIVE damage in this process, and end her rotation.

• The damage of this second Ultimate is influenced by how much Aero Erosion is present on the targets, up to 5 stacks. Each of these 5 potential stacks get removed on cast and amplify the damage of the attack by 20% each (up to 100%).

• The second Ultimate restores 50% of Cartethyia’s (not Fleurdelys’s) max HP.

• Ending the state does not cost any Resonance Energy.

Here is the most efficient way to stack up Conviction, along with what abilities consume Aero Erosion:

• Skill 1

• Mid-Air Attack 3

• Skill 2 (this consumes 1 Aero Erosion)

• Basic 3 (her Basic chain starts from stage 3 after Skill 2)

• Basic 4

• Basic 5 (this consumes 1 Aero Erosion)

• Heavy Attack

• Enhanced Heavy Attack (press Basic Attack shortly after Heavy Attack)

After all of these abilities have been performed, Fleurdelys is free to perform her second Ultimate, nuke enemies down, and end her rotation. Her Outro amplifies Aero DMG dealt to targets with Negative Status applied by 17.5% for 20s, which is an acceptable boost but nothing impressive.

All of Cartethyia’s kit mechanics tied to Aero Erosion consumption aren’t utilizable to their fullest on her own. Unfortunately, to fully utilize her Ultimate’s DMG Amplification effect and to fully utilize her Inherent Skill’s DMG Bonus, she will need to be paired with specifically Ciaccona, and before her S2 Aero Rover as well. They are non-negotiably her best teammates, however Cartethyia’s S2 does allow her to throw out Aero Rover as a teammate as she can get 6 stacks of Aero Erosion thanks to it. This removes the need to have a clunky teammate on the team and only further adds to her value (not to mention the insane damage boosts S1 & S2 provide, basically makes clearing any content completely free).

Nonetheless, at S0, Cartethyia’s teams do get restricted by the nature of her kit’s mechanics, as they tie her down to specific Aero Erosion teammates. However, even without both Ciaccona and Aero Rover (all 3 must non-negotiably be used together for optimal synergy), Cartethyia does get fantastic damage on her own as her kit is mostly self-sufficient. Add that to a solid amount of swap cancel windows (check her Gameplay page for more information on this) and you have a character who is more than enough on her own, and a massive destructive force in her best team. It’s very easy to see Cartethyia deals the most damage of any character currently and as a result is the best damage dealer in the game, making her a staple of the game’s meta.

In conclusion, Cartethyia is an excellent all-around damage dealer. She is capable of handling all kinds of situations, from single-target to AoE, although she does have some issues re-applying Aero Erosion, particularly in Whimpering Wastes, when a full wave of enemies dies at once. She has the highest damage potential in the game and is able to work with several teammates to a great degree, even her F2P team is good enough to make for a top tier team composition. Note however that her main flaw is in her lack of a good weapon due to her HP scaling & she lacks Aero Erosion teammate options, which can make her expensive or underperform if you don’t invest enough pulls into getting her other upgrades to make full leverage of her kit. However, in her best conditions, Cartethyia will perform as the best DPS in the game, making her one of the most valuable characters in Wuthering Waves.