Cartethyia
Cartethyia
Yes for Aero Erosion / HP-routing carry—Cartethyia wants dedicated Erosion supports. Liberation “A Knight's Heartfelt Prayers” routes damage through mid-air / plunging attack chains. Needs Ciaccona. Best partners: Ciaccona / Shorekeeper / Aero Rover. HP reduction into Liberation wants sustain that enables the state—panic top-ups cancel the kit. Skip when you lack Ciaccona-class Erosion support and won’t build the package.
Cartethyia is a 5★ Aero Main DPS who fights with a Sword. Liberation “A Knight's Heartfelt Prayers” routes damage through mid-air / plunging attack chains. Forte “Tempest” routes damage through mid-air / plunging attack chains.
Overview
Quick Build
Weapon
Defier's Thorn
Signature option — largest personal spike once Liberation “A Knight's Heartfelt Prayers” is online.
Echo Set
Sierra Gale (5pc)
Default Sonata match for this role/element package.
4-Cost
CRIT Rate / CRIT DMG
Main stat
3-Cost
Aero DMG
Main stat
1-Cost
ATK%
Substats
CRIT Rate ≥ CRIT DMG > ATK% > Energy Regen
Strengths
- Liberation “A Knight's Heartfelt Prayers” routes damage through mid-air / plunging attack chains — that window is where Cartethyia’s clear speed actually shows up.
- Forte “Tempest” routes damage through mid-air / plunging attack chains, so resource banking is mandatory, not optional filler.
- Outro “Wind's Divine Blessing” amplifies the incoming Resonator’s damage on Outro handoff — swap timing is part of the damage plan, not just Concerto filling.
- Aerial / plunge routes give flexible dodge and reposition options mid-combo.
Weaknesses
- Field-time hungry once Liberation “A Knight's Heartfelt Prayers” is up — double-DPS swaps dilute the dump window.
- Wants dedicated supports and ER planning; dropped into a random squad, Liberation uptime falls off a cliff.
Forte Priority
“A Knight's Heartfelt Prayers” — routes damage through mid-air / plunging attack chains. Level first.
“Tempest” — routes damage through mid-air / plunging attack chains.
Primary generator / setup tool for Liberation and Forte.
Opens rotations and often refunds Concerto or setup buffs.
Team amp or handoff — important for supports, lower for selfish DPS.
Stat Priority
Build Concerto on supports → Intro Cartethyia → “Sword to Bear Their Names” / “Tempest” resource loop → “A Knight's Heartfelt Prayers” dump → “Wind's Divine Blessing” or swap as needed.
Refine timings once you learn Concerto breakpoints for your specific team.
Weapons
CRIT / ATK (signature)
Signature Sword tuned to Cartethyia's kit.
Why it works —Best-in-slot when you own it — pull only if you are committing to Liberation “A Knight's Heartfelt Prayers” long-term.
CRIT Rate / ATK%
Any well-refined 5★ Sword with CRIT or ATK.
Why it works —Flexible premium stand-in while farming signature.
ATK% / Energy Regen
Accessible Sword option for early investment.
Why it works —Best F2P path — refine and swap off once a 5★ lands.
Echoes
Team Compositions
Team #1: Ciaccona brings Aero Erosion amp; Chisa is the Dual-DPS / quickswap partner. Rotation: open Ciaccona / Chisa for Concerto → Intro Cartethyia → Liberation / Forte dump. Chisa is only stronger than Aero Rover with her Signature.
Cartethyia is the on-fielder — bank Concerto on Ciaccona / Chisa, Intro in, then dump Liberation / Forte inside their amp windows.
But most importantly, Ciaccona applies a ton of Aero Erosion off-field over time, which allows Cartethyia to make full leverage of her kit buffs.
Chisa shares field time with Cartethyia — trade Intro / Outro so both Liberation windows get amp coverage.
Forte & Resonance Chain
Forte
Basic Attack - Cartethyia Perform up to 4 consecutive attacks, dealing Aero DMG. Following Basic Attack - Cartethyia Stage 4, inflict 1 stack of Aero Erosion on targets hit and summon Sword of Divinity's Shadow. Up to 1 Sword of Divinity's Shadow may exist at the same time, lasting for 20s. Heavy Attack - Cartethyia Consume STA to attack the target, dealing Aero DMG and summoning Sword of Discord's Shadow. Can be performed in mid-air. Up to 1 Sword of Discord's Shadow may exist at the same time, lasting for 20s. This instance of DMG is considered Basic Attack DMG. Mid-air Attack - Cartethyia Release Normal Attack button while airborne to perform Plunging Attack at the cost of STA, dealing Aero DMG, also considered Aero Erosion DMG. Press Normal Attack shortly after the Plunging Attack to perform Basic Attack - Cartethyia Stage 2. Casting Mid-air Attack - Cartethyia recalls all Sword Shadows. Based on the types and number of Sword Shadows recalled, perform different forms of Plunging Attack and obtain the corresponding Heart of Virtue, Mandate of Divinity, and Power of Discord. Dodge Counter - Cartethyia Press Normal Attack shortly after a successful Dodge to attack the target, dealing Aero DMG.
Resonance Skill - Cartethyia Attack the target, launch nearby enemies, and then plunge them to the ground, dealing Aero DMG and inflicting 2 stacks of Aero Erosion on the targets hit. This instance of DMG is considered Basic Attack DMG. Can be performed in mid-air. Following Cartethyia - Resonance Skill, summon Sword of Virtue's Shadow. Up to 1 Sword of Virtue's Shadow may exist at the same time, lasting for 20s.
Resonance Liberation - A Knight's Heartfelt Prayers By reducing HP to 50% of the Max HP, Cartethyia transforms into Fleurdelys, unlocking new moves and entering the Manifest state for 12s. Can be performed in mid-air. Entering Manifest clears all Conviction. As Fleurdelys, Basic Attack - Fleurdelys Stage 5, Mid-air Attack - Fleurdelys Stage 2, and Resonance Skill - May Tempest Break the Tides instantly trigger 1 instance of Aero Erosion DMG and reduce the Aero Erosion stack on the target hit by 1. - Ending the state will not clear Resonance Energy. - No HP cost when HP is below 50%. Fleurdelys's attacks restore Conviction on hit. When Conviction reaches 120 points, press Resonance Liberation to cast Resonance Liberation - Blade of Howling Squall. When Conviction is below 120 points, press Resonance Liberation to transform back into Cartethyia. When in Manifest, casting Resonance Liberation - A Knight's Heartfelt Prayers as Cartethyia consumes no Resonance Energy. When Fleurdelys has Heart of Virtue in Manifest: - Basic Attack - Fleurdelys Stage 4 will generate a force field to Stagnate the targets within the range. - Fleurdelys's resistance to interruption increases. Heart of Virtue is removed when Manifest ends. When Fleurdelys has Mandate of Divinity in Manifest: Aero Erosion DMG is Amplified by 50% and the damage interval is decreased by 50% for enemies within a certain distance from Fleurdelys. Mandate of Divinity is removed when Manifest ends. When Fleurdelys has Power of Discord in Manifest: When casting Basic Attack - Fleurdelys Stage 5, Mid-air Attack - Fleurdelys Stage 2 and Enhanced Heavy Attack - Fleurdelys or after Resonance Skill - May Tempest Break the Tides deals damage, raise the Aero Erosion stacks on all nearby targets to the highest count among the targets. Power of Discord is removed when Manifest ends. Fleurdelys will transform back to Cartethyia during quest dialogues, environmental interaction animations, or using Utilities. Fleurdelys can walk on water. Doing so on deep waters continuously consumes STA. When in walking state, Fleurdelys can step out of a high place and walk in mid-air by continuously consuming STA. Avatar - Cartethyia As Fleurdelys, when Conviction is below 120 points, press Resonance Liberation to perform Basic Attack - Cartethyia Stage 2 and temporarily transform back to Cartethyia, which pauses the timer on Manifest. Can be cast in mid-air. Casting the skill in mid-air performs Mid-air Attack - Cartethyia. Avatar - Fleurdelys When in Manifest, casting Resonance Liberation as Cartethyia performs Basic Attack - Fleurdelys Stage 2 without consuming Resonance Energy and transforms her back to Fleurdelys, which resumes the timer on Manifest. Can be cast in mid-air. Casting this skill in mid-air performs Mid-air Attack - Fleurdelys Stage 1. Resonance Liberation - Blade of Howling Squall When Fleurdelys has 120 points of Conviction, Resonance Liberation - A Knight's Heartfelt Prayers is replaced by Resonance Liberation - Blade of Howling Squall. Casting Resonance Liberation - Blade of Howling Squall removes all Conviction, ends Manifest, restores 50% of Max HP, and then deals Aero DMG to all targets in an area along a straight line in front. Upon hitting the target, remove all stacks of Aero Erosion on the target. Each stack removed Amplifies the DMG taken by the targets by 20%, up to 5 stacks. Can be cast in mid-air.
Cartethyia - Sword to Mark Tide's Trace Deal Aero DMG and inflict 2 stacks of Aero Erosion on targets hit. Summon Sword of Discord's Shadow. Up to 1 Sword of Discord's Shadow may exist at the same time, lasting 20s. Press Normal Attack shortly after Cartethyia - Sword to Mark Tide's Trace to perform Basic Attack - Cartethyia Stage 2. Fleurdelys - Sword to Call for Freedom Thrust forward to impale the target, dealing Aero DMG and restoring Conviction. Press Normal Attack shortly after Fleurdelys - Sword to Call for Freedom to cast Basic Attack - Fleurdelys Stage 2.
Aero DMG dealt by the active Resonator in the team other than Cartethyia/Fleurdelys to targets with Negative Statuses is Amplified by 17.5% for 20s.
When the target's Off-Tune Level is full, the Resonator may cast Tune Break on the target.
Cartethyia unlocks new moves when she transforms into Fleurdelys: Basic Attack - Fleurdelys Basic Attack - Cartethyia is replaced by Basic Attack - Fleurdelys. Perform up to 5 consecutive attacks, dealing Aero DMG and restoring Conviction on hit. Mid-air Attack - Fleurdelys Mid-air Attack - Cartethyia is replaced by Mid-air Attack - Fleurdelys. Perform up to 3 consecutive attacks in the air at the cost of STA, dealing Aero DMG and restoring Conviction on hit. While airborne, hold Normal Attack to cast Mid-air Attack - Fleurdelys Stage 3. Follow up with Basic Attack shortly afterward to cast Basic Attack - Fleurdelys Stage 3. While airborne, casting Resonance Skill - Sword to Answer Waves' Call and Resonance Skill - May Tempest Break the Tides resets the cycle of Mid-air Attack - Fleurdelys. Heavy Attack - Fleurdelys Heavy Attack - Cartethyia is replaced by Heavy Attack - Fleurdelys. Thrust forward to deliver a focused strike, dealing Aero DMG and restoring Conviction on hit. This instance of DMG is considered Basic Attack DMG. Enhanced Heavy Attack - Fleurdelys While casting Heavy Attack - Fleurdelys, press Normal Attack again to cast Enhanced Heavy Attack - Fleurdelys: fall back and blast the area in a straight line in front, dealing Aero DMG and restoring Conviction on hit. This instance of DMG is considered Basic Attack DMG. Follow up with Basic Attack shortly after casting Enhanced Heavy Attack - Fleurdelys to cast Upward Cut - Fleurdelys. Upward Cut - Fleurdelys While Fleurdelys is on the ground, Jump to cast this skill, dealing Aero DMG and restoring Conviction on hit. Dodge Counter - Fleurdelys Dodge Counter - Cartethyia is replaced by Dodge Counter - Fleurdelys. Press Normal Attack shortly after a successful Dodge to attack the target, dealing Aero DMG and restoring Conviction on hit. Follow up with Basic Attack shortly afterward to cast Basic Attack - Fleurdelys Stage 4 . Resonance Skill - Sword to Answer Waves' Call Resonance Skill - Cartethyia is replaced by Resonance Skill - Sword to Answer Waves' Call. Summon a force field near the target's location to continuously pull in nearby targets, dealing Aero DMG and restoring Conviction on hit. Can be cast in mid-air. Resonance Skill - May Tempest Break the Tides Following Resonance Skill - Sword to Answer Waves' Call, press Resonance Skill again to call down a giant Sword Shadow to crush an area around the target, creating a force field to pull in nearby targets, dealing Aero DMG to ground targets, and restoring Conviction on hit. Follow up with Basic Attack shortly afterward to cast Basic Attack - Fleurdelys Stage 3. The Resonance Skill enters cooldown if Resonance Skill - May Tempest Break the Tides is not cast within a certain period or when switching to another Resonator. Can be cast in mid-air.
The healing received by all Resonators other than Cartethyia/Fleurdelys in the team is increased by 20% and their resistance to interruption is enhanced. If Rover: Aero is in the team, Rover: Aero additionally restores 25 Windstrings upon casting Omega Storm.
Targets with 1 to 3 stacks of Aero Erosion take 30% more DMG from Cartethyia and Fleurdelys. Targets with more than 3 stacks of Aero Erosion additionally take 10% more DMG from Cartethyia and Fleurdelys for each stack of Aero Erosion they have, up to 3 stacks.
Has a chance to produce special dishes when cooking.
Resonance Chain
Gain Zeal that lasts for 10s when Cartethyia's or Fleurdelys's attacks directly damage and defeat targets inflicted with Aero Erosion. In the Zeal state, upon defeating enemies, the next move that directly damages targets raises the Aero Erosion stacks on the targets to the highest count among the targets defeated. This will not exceed the current max Aero Erosion stack limit. Zeal is removed afterward and enters a 1s cooldown. When Fleurdelys's Conviction hits 30/60/90/120, Fleurdelys's Crit. DMG is increased by 25% for 15s, up to 4 stacks. The duration of this effect does not reset upon gaining new stacks. After casting Resonance Liberation - Blade of Howling Squall, the increased Crit. DMG is removed.
Is it worth getting?
Comfort opener: Flat CRIT bump tied to a specific combat state. Nice QoL/damage, but S0 still runs the full kit — don’t break pity for S1 alone.
Casting Resonance Liberation - A Knight's Heartfelt Prayers increases the max stack limit of Aero Erosion on targets within a certain range by 3 stacks. The next attack that directly damages the target inflicts 3 stacks of Aero Erosion on all targets within a certain range and immediately triggers the Aero Erosion DMG on the targets hit once without consuming the Aero Erosion stacks. The DMG Multipliers of Cartethyia's Basic Attack, Heavy Attack, Dodge Counter, and Intro Skill are increased by 50% and the DMG Multiplier of her Mid-air Attack is increased by 200%. After casting Mid-air Attack - Cartethyia, every 1 type of Sword Shadow recalled reduces the cooldown of Resonance Skill - Cartethyia by 1s.
Is it worth getting?
Stat-leaning S2: Refunds Energy / Concerto / Forte resources mid-rotation. Clear damage, but it does not rewrite Cartethyia’s rotation the way a mechanic Sequence would.
Basic Attack - Fleurdelys Stage 5, Mid-air Attack - Fleurdelys Stage 2, Enhanced Heavy Attack - Fleurdelys, and Resonance Skill - May Tempest Break the Tides now inflict 2 stacks of Aero Erosion on the targets hit. The DMG Multiplier of Resonance Liberation - Blade of Howling Squall is increased by 100%.
Is it worth getting?
Situational S3: Adds RES / DEF shred or a large DMG Bonus clause.
After Resonators in the team inflict Havoc Bane, Fusion Burst, Spectro Frazzle, Electro Flare, Glacio Chafe, orAero Erosion, all Resonators in the team gain 20% DMG Bonus for all Attributes for 20s.
Is it worth getting?
Side-grade: Extends or empowers the unit’s named burst state. Happy if it drops; not a planned stopping point.
When Cartethyia or Fleurdelys takes a fatal blow, they will not be downed by this instance of damage, but instead gain a Shield equal to 20% of Cartethyia's Max HP for 10s. This effect can be triggered once every 10 min. The HP cost for casting Resonance Liberation - A Knight's Heartfelt Prayers is reduced to 25% of Max HP.
Is it worth getting?
Late luxury: Refunds Energy / Concerto / Forte resources mid-rotation. Grab it if you overshoot toward S6 — never hard-pity for S5 alone.
After casting Resonance Liberation - Blade of Howling Squall, raise the Aero Erosion stacks on the target hit to max. Casting Resonance Liberation - Blade of Howling Squall no longer removes the Aero Erosion stacks on the target. Within 30s after casting Intro Skill - Sword to Mark Tide's Trace, Intro Skill - Sword to Call for Freedom, Resonance Liberation - A Knight's Heartfelt Prayers, and Resonance Liberation - Blade of Howling Squall, when any Resonator in the team inflicts Aero Erosion on the targets with max stacks of Aero Erosion, immediately trigger the Aero Erosion DMG once. The targets take 40% more DMG from Fleurdelys.
Is it worth getting?
Whale ceiling: Refunds Energy / Concerto / Forte resources mid-rotation. Only chase if Cartethyia is your dedicated main and S0–S2 already feel finished.
Cartethyia is fully usable at S0. Most dedicated mains stop at S2 before chasing higher Wavebands. First stop: S2. Endgame target: S2.
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