Mornye Build Guide

Mornye portrait
FusionS+ Tier

Astral Mapping

Build Priority

Skill Priority
Forte CircuitResonance LiberationNormal AttackIntro SkillResonance Skill

Stat Priority

Echo Main Stats
4-Cost: Healing Bonus3-Cost: Energy Regen3-Cost: Energy Regen1-Cost: DEF%1-Cost: DEF%
Substat Priority
1Energy Regen
2DEF

Energy Regen (at least 250%)

Should you build Mornye?

Mornye is a Fusion sustain who heals, raises the team's Off-Tune Buildup Rate, and gives every teammate 25% All DMG Amplification through her Outro. Her marked-target bonus also rewards Tune Rupture or Tune Strain teams, but it needs a short setup at S0.

What to know before spending pulls

Her complete support loop works at S0. Build Energy Regen first because it helps her cast Critical Protocol and directly scales both that Liberation's Crit stats and the damage enemies take through Interfered Marker. The current build target is at least 250% Energy Regen, with DEF after that for her healing and protective passive.

Do you need the signature weapon?

Starfield Calibrator is Mornye's featured weapon. At level 90 it has 413 ATK and 77.04% Energy Regen. It also grants 16% DEF, restores 8 Concerto Energy after Liberation once every 20 seconds, and gives the team 20% Crit DMG for 4 seconds when Mornye heals. Discord is the listed 4-star Energy Regen option with 338 ATK and 51.84% Energy Regen; casting Resonance Skill restores 8 Concerto Energy once every 20 seconds. Starfield covers more of her Energy Regen target and adds team Crit DMG, while Discord still supports a quicker Outro through the Skill she already casts.

Another character copy or the weapon?

S1 means Mornye's first Resonance Chain upgrade. It applies Interfered Marker as soon as she applies Observation Marker, extends its duration, and lets its damage increase work even when the enemy is not under Tune Rupture - Interfered or Tune Strain - Interfered. Starfield Calibrator instead supplies Energy Regen, DEF, Concerto, and a short team Crit DMG buff. S1 removes several conditions from her marked-target support; the weapon makes her normal support cycle easier to fund.

Advice for your account

New account using Discord

Discord gives Energy Regen and restores Concerto from Resonance Skill. It is a practical starting option, but its lower Energy Regen means more Echo substats are needed to approach the listed 250% target.

Tune Rupture or Tune Strain team

At S0, land Inversion to apply Observation Marker, Tune Break that marked enemy to create Interfered Marker, then apply the team's matching Interfered status. Only after those steps does the marked target take Mornye's Energy Regen-scaled increased damage.

Team that cannot maintain an Interfered status

Mornye still provides healing, 50% Off-Tune Buildup Rate in her field, and 25% All DMG Amplification from Outro. S1 is the upgrade that lets Interfered Marker's damage increase work without a Tune Rupture or Tune Strain Interfered state.

Best Echo Set →Teams →

Reviewed 2026-09-16 for game version 3.6

Rotation and troubleshooting

Easy rotation

Cast Expectation Error for an immediate team heal, then use Basic Attacks until Rest Mass Energy reaches 100. Hold Normal Attack for Geopotential Shift, which puts Mornye into Wide Field Observation Mode and creates Syntony Field. Cast Distributed Array for another heal, then use her three-stage field Basic Attack until Relative Momentum reaches 100. Hold Normal Attack for Inversion to spend the meter and apply Observation Marker. Cast Critical Protocol while Syntony Field is present to replace it with High Syntony Field, then use Outro to give the team 25% All DMG Amplification for 30 seconds.

Opening vs. repeat cycles

Intro clears Rest Mass Energy and enters Wide Field Observation Mode immediately, so a repeat entry through Intro can skip the Baseline meter-building step. It also restores 20 Concerto Energy once every 20 seconds. After that entry, use Distributed Array and field attacks to build Relative Momentum, apply Observation Marker with Inversion, upgrade the field with Liberation, and Outro.

Why this skill priority

Forte Circuit leads because it contains both fields, both meters, healing over time, the Off-Tune Buildup Rate increase, and the Observation and Interfered Marker sequence. Liberation upgrades Syntony Field and gains Crit Rate and Crit DMG from Energy Regen above 100%. Outro is fixed at 25% All DMG Amplification and does not have a separate level priority.

Required buffs and assumptions

The marked-target damage increase at S0 is conditional. Observation Marker must be applied by Inversion, a teammate must Tune Break that target to create Interfered Marker, and the target must then be affected by Tune Rupture - Interfered or Tune Strain - Interfered. Her field healing and Off-Tune Buildup Rate increase do not require that marker chain.

Energy Regen target

The build data recommends at least 250% Energy Regen. At that value, Mornye has 150 percentage points above 100%, which grants Critical Protocol 75% Crit Rate and 150% Crit DMG and makes Interfered Marker increase team damage by 37.5% when its S0 status conditions are met. The marker effect caps at 40%, so reaching that final 2.5% requires 260% Energy Regen.

Troubleshooting

Syntony Field appears but never becomes High Syntony Field

Likely cause: Critical Protocol was cast before the field existed or after its 25-second duration ended.

Check: Confirm Mornye entered Wide Field Observation Mode and created Syntony Field before using Liberation.

Fix: Create Syntony Field with Geopotential Shift or Intro, then cast Critical Protocol while the field is still active.

Inversion does not apply Observation Marker

Likely cause: Relative Momentum had not reached 100, so the held input continued the field Basic Attack instead.

Check: Watch the Relative Momentum meter after Distributed Array and field Basic Attacks.

Fix: Reach 100 Relative Momentum before holding Normal Attack for Inversion.

A marked enemy does not take the Energy Regen-scaled team damage increase at S0

Likely cause: The enemy has only Observation Marker, or it lacks Tune Rupture - Interfered or Tune Strain - Interfered.

Check: Verify the team Tune Broke the marked target to create Interfered Marker and then applied a supported Interfered status.

Fix: Apply Observation Marker with Inversion, Tune Break the target, then trigger the team's Tune Rupture or Tune Strain Interfered state.

Reviewed 2026-09-16 for game version 3.6

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