What is the best Light Cone for Mydei?

The Unreachable Side is the closest fit on the data: it is a 5-star Destruction Light Cone with 582 base ATK at level 80, and its passive acts on HP. Ninja Record: Sound Hunt is the best 4-star alternative.

Which relic set should Mydei use?

Wastelander of Banditry Desert. Its 2-piece bonus is: Increases Imaginary DMG by 10%. Its 4-piece bonus is: When dealing DMG to debuffed enemy targets, the wearer has their CRIT Rate increased by 10%. And when they deal DMG to Imprisoned enemy targets, their CRIT DMG increases by 20%.

Which Planar Ornament should Mydei use?

Fleet of the Ageless. Its 2-piece bonus is: Increases the wearer's Max HP by 12%. When the wearer's SPD reaches 120 or higher, all allies' ATK increases by 8%. Planar Ornaments have no 4-piece bonus; the sphere and the rope are the whole set.

Mydei, Imaginary Destruction character | Honkai: Star Rail

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Amphoreus

Mydei Build

Build guide · Honkai: Star Rail

ImaginaryDestructionMain DPS

English voice: Gabriel Warburton

The best Mydei build in Honkai: Star Rail (Version 4.6) is Flame of Blood, Blaze My Path with Scholar Lost in Erudition. Updated November 5, 2026

Abilities Traces Materials Eidolons

Where these rankings come fromThe light cone order, relic sets and stat priorities on this tab are prydwen.gg’s, measured in play and rephrased. Relative damage figures are ratios against the bottom of each ranking, not absolute numbers, and each one holds only for the superimposition and team its row states. Everything else (base stats, passive text, material totals) is read from the game’s own data.

Light cones

5 ranked

Flame of Blood, Blaze My Path, 5★ Destruction Light Cone | Honkai: Star Rail

BISFlame of Blood, Blaze My Path

138.10% at S1

476

Base ATK · lv 80

1376 HP397 DEF

The Unreachable Side, 5★ Destruction Light Cone | Honkai: Star Rail

#2The Unreachable Side

116.95% at S1

582

Base ATK · lv 80

1270 HP331 DEF

A Secret Vow, 4★ Destruction Light Cone | Honkai: Star Rail

#3A Secret Vow

109.89% at S5

476

Base ATK · lv 80

1058 HP265 DEF

Ninja Record: Sound Hunt, 4★ Destruction Light Cone | Honkai: Star Rail

#4Ninja Record: Sound Hunt

100% at S5

476

Base ATK · lv 80

1058 HP265 DEF

Flames Afar, 4★ Destruction Light Cone | Honkai: Star Rail

#5Flames Afar

96.69% at S5

476

Base ATK · lv 80

1058 HP265 DEF

Relics

2 sets

CoreScholar Lost in Erudition

The majority of Mydei's damage comes from his skills, making this set his top choice. For maximum performance time, use Mydei's Ultimate right before his Godslayer Be God activates to ensure it gains the 4P additional buff.

2PCIncreases CRIT Rate by 8%.

4PCIncreases DMG dealt by Skill and Ultimate by 20%. After using Ultimate, additionally increases the DMG dealt by the next Skill by 25%.

Also works

Longevous Disciple

Planar ornaments

Sphere and rope · 2-piece only

CoreBone Collection's Serene Demesne

Mydei's best in slot Planar option that helps him reach 8000 HP and doesn't contribute to his CRIT RATE overabundance issue. Almost every Mydei can easily satisfy the 5000 HP requirement of this Planar.

2PCIncreases the wearer's Max HP by 12%. When the wearer's Max HP is 5000 or higher, increases the wearer's and their memosprite's CRIT DMG by 28%.

Also works

Rutilant Arena

Main stats

Ultimate · 160 energy

Body: HP% = CRIT DMG
Feet: Speed > HP%
Planar Sphere: HP% >= Imaginary DMG
Link Rope: HP%

Substat priority

Highest first

1HP% (Best until 8k then equal)Best
2CRIT Rate/CRIT DMG

Trace priority

Level in this order

#1
Skill
Max first
#2
Ultimate
Then
#3
Talent
Next
#4
Basic
Later

Major traces, best first: Earth and Water (A2) > Bloodied Chiton (A6) > Thirty Tyrants (A4)

Best Eidolons

E3 and E5 raise levels only

E1Frost Hones Spine of Steel
E2Strife Beholds Cry of Dead
E3Level bump
E4Siren Jolts the Laconic Lion
E5Level bump
E6Legacy Scales Mound of Blood

E1
Frost Hones Spine of Steel
Game text
Increases the DMG multiplier dealt by "Godslayer Be God" to the primary target by 30%. This ability now deals to all enemies Imaginary DMG equal to the DMG multiplier dealt to the primary target.
E2
Strife Beholds Cry of Dead
Game text
During "Vendetta," the DMG dealt by Mydei ignores 15% of enemy targets' DEF. After he receives healing, converts 40% of the healed amount to Charge. The tally of the converted Charge cannot exceed 40 point(s). Resets this tally of Charge after any unit takes action.
E4
Siren Jolts the Laconic Lion
Game text
While in "Vendetta," increases CRIT DMG by 30% and restores HP by 10% of this unit's Max HP after receiving attacks from enemy targets.
E6
Legacy Scales Mound of Blood
Game text
When entering battle, immediately enters the "Vendetta" state, and lowers the Charge required for "Godslayer Be God" to 100 point(s).

Teams

1 team

Mydei team

Imaginary · HP scalingLeads

Mydei spends his own HP to attack, which turns a healer from a safety net into the thing that keeps the rotation running.

Mydei, this characterMain DPS
TribbieHarmony buffer
SundayAction advance
HyacineSustain

All teams, with every replacement

Honkai: Star Rail 5★ Imaginary Destruction Main DPS

Mydei build summary

Updated November 5, 2026

Flame of Blood, Blaze My Path tops the light cone ranking for Mydei, at 138.10% relative damage at S1, ahead of The Unreachable Side, A Secret Vow and Ninja Record: Sound Hunt. That order is prydwen.gg's, measured in play and rephrased here; every row of it sits under Light cones below.

Run Scholar Lost in Erudition on Mydei, with Longevous Disciple behind it. The planar ornament is Bone Collection's Serene Demesne. Main stats are HP% = CRIT DMG body, Speed > HP% feet, HP% >= Imaginary DMG sphere, HP% rope. Roll substats in the order HP% (Best until 8k then equal) >= CRIT Rate/CRIT DMG.

Trace priority is Skill > Ultimate > Talent > Basic. The Ultimate costs 160 energy, which is what an Energy Regeneration Rate target has to clear.

The strongest team is Mydei, Tribbie, Sunday and Hyacine, built around Mydei: Imaginary · HP scaling.

Role: Main DPS / Sustain
Best light cone: Flame of Blood, Blaze My Path
Alternatives: The Unreachable Side, A Secret Vow, Ninja Record: Sound Hunt
Relic set: Scholar Lost in Erudition
Planar ornament: Bone Collection's Serene Demesne
Main stats: HP% = CRIT DMG body, Speed > HP% feet, HP% >= Imaginary DMG sphere, HP% rope
Substat priority: HP% (Best until 8k then equal) >= CRIT Rate/CRIT DMG
Trace priority: Skill > Ultimate > Talent > Basic
Best team: Mydei, Tribbie, Sunday, Hyacine
Ultimate energy cost: 160 energy
Key ascension material: 15× Glory-Aspersed Torso
Last updated: November 5, 2026

Mydei build FAQ

What is the best Light Cone for Mydei?: The Unreachable Side is the closest fit on the data: it is a 5-star Destruction Light Cone with 582 base ATK at level 80, and its passive acts on HP. Ninja Record: Sound Hunt is the best 4-star alternative.
Which relic set should Mydei use?: Wastelander of Banditry Desert. Its 2-piece bonus is: Increases Imaginary DMG by 10%. Its 4-piece bonus is: When dealing DMG to debuffed enemy targets, the wearer has their CRIT Rate increased by 10%. And when they deal DMG to Imprisoned enemy targets, their CRIT DMG increases by 20%.
Which Planar Ornament should Mydei use?: Fleet of the Ageless. Its 2-piece bonus is: Increases the wearer's Max HP by 12%. When the wearer's SPD reaches 120 or higher, all allies' ATK increases by 8%. Planar Ornaments have no 4-piece bonus; the sphere and the rope are the whole set.

Mydei Build

Light cones

Relics

Planar ornaments

Main stats

Substat priority

Trace priority

Best Eidolons

Frost Hones Spine of Steel

Strife Beholds Cry of Dead

Siren Jolts the Laconic Lion

Legacy Scales Mound of Blood

Teams

Mydei build FAQ