What Combat Type is Mydei?

Mydei is a 5-star Imaginary character on the Path of Destruction, from Amphoreus, released in version 3.1.

What stat does Mydei scale on?

Mydei's abilities multiply HP. That is read from the scaling rows on the Skill and Ultimate, not from the ability description, so it reflects what the game actually multiplies rather than what the text mentions.

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.

How much does it cost to max Mydei's traces?

Taking one ability from level 1 to 10 costs 652,500 Credits and 2× Tracks of Destiny among other materials. The Materials tab lists every item per level.

What does Mydei E1 do?

Frost Hones Spine of Steel: 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.

Mydei — Imaginary Destruction character | Honkai: Star Rail

All characters

Amphoreus

Mydei

Build guide · Honkai: Star Rail

ImaginaryDestructionMain DPS

English voice: Gabriel Warburton

The best Mydei build in Honkai: Star Rail (Version 4.4) is Flame of Blood, Blaze My Path with Scholar Lost in Erudition. Updated August 28, 2026

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 August 28, 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: August 28, 2026

Abilities

6 levellable

Basic

Vow of Voyage

Single Target
+20 energy
30 Toughness

Deals Imaginary DMG equal to 50% of Mydei's Max HP to one designated enemy.

Ability level

6 is the cap from trace materials; Eidolons add the rest.

Basic ATK DMG: 50%

All 10 levels

Attribute	1	2	3	4	5	6	7	8	9	10
Basic ATK DMG	25%	30%	35%	40%	45%	50%	55%	60%	65%	70%

Skill

Deaths are Legion, Regrets are None

Blast
+30 energy
60 Toughness

Consumes HP by an amount equal to 50% of Mydei's current HP. Deals Imaginary DMG equal to 90% of Mydei's Max HP to one designated enemy and Imaginary DMG equal to 50% of Mydei's Max HP to adjacent targets. If the current HP is not sufficient, using Skill reduces Mydei's current HP to 1.

Ability level

10 is the cap from trace materials; Eidolons add the rest.

Skill DMG: 90%
Adjacent DMG: 50%

All 15 levels

Attribute	1	2	3	4	5	6	7	8	9	10	11	12	13	14	15
Skill DMG	45%	50%	54%	59%	63%	68%	73%	79%	84%	90%	95%	99%	103%	108%	113%
Adjacent DMG	25%	28%	30%	33%	35%	38%	41%	44%	47%	50%	53%	55%	57%	60%	63%

Skill

Kingslayer Be King

Blast
+30 energy
60 Toughness

Consumes HP by an amount equal to 35% of Mydei's current HP. Deals Imaginary DMG equal to 110% of Mydei's Max HP to one enemy and Imaginary DMG equal to 66% of Mydei's Max HP to adjacent targets. If the current HP is not sufficient, using Skill reduces Mydei's current HP to 1. This ability will be automatically used.

Ability level

10 is the cap from trace materials; Eidolons add the rest.

Skill DMG: 110%
Adjacent DMG: 66%

All 15 levels

Attribute	1	2	3	4	5	6	7	8	9	10	11	12	13	14	15
Skill DMG	55%	61%	66%	72%	77%	83%	89%	96%	103%	110%	116%	121%	126%	132%	138%
Adjacent DMG	33%	36%	40%	43%	46%	50%	54%	58%	62%	66%	69%	73%	76%	79%	83%

Skill

Godslayer Be God

Blast
+10 energy
90 Toughness

Consumes 150 point(s) of Charge. Deals Imaginary DMG equal to 280% of Mydei's Max HP to one enemy and Imaginary DMG equal to 168% of Mydei's Max HP to adjacent targets. This ability will be automatically used. While this ability is in use, Charge cannot be accumulated.

Ability level

10 is the cap from trace materials; Eidolons add the rest.

Skill DMG: 280%
Adjacent DMG: 168%

All 15 levels

Attribute	1	2	3	4	5	6	7	8	9	10	11	12	13	14	15
Skill DMG	140%	154%	168%	182%	196%	210%	228%	245%	263%	280%	294%	308%	322%	336%	350%
Adjacent DMG	84%	92%	101%	109%	118%	126%	137%	147%	158%	168%	176%	185%	193%	202%	210%

Ultimate

Throne of Bones

Blast
+5 energy
60 Toughness

Restores HP by 20.0% of Mydei's Max HP and accumulates 20 Talent's Charge point(s). Deals Imaginary DMG equal to 160% of Mydei's Max HP to one designated enemy, and deals Imaginary DMG equal to 100% of Mydei's Max HP to adjacent targets. Additionally, Taunts the target and targets adjacent to it, lasting for 2 turn(s). The next use of "Godslayer Be God" prioritizes attacking one designated enemy, and this effect only works on the latest target.

Ability level

10 is the cap from trace materials; Eidolons add the rest.

Heal: 20.0%
Ultimate DMG: 160%
Adjacent DMG: 100%

All 15 levels

Attribute	1	2	3	4	5	6	7	8	9	10	11	12	13	14	15
Heal	15.0%	15.5%	16.0%	16.5%	17.0%	17.5%	18.1%	18.8%	19.4%	20.0%	20.5%	21.0%	21.5%	22.0%	22.5%
Ultimate DMG	96%	102%	109%	115%	122%	128%	136%	144%	152%	160%	166%	173%	179%	186%	192%
Adjacent DMG	60%	64%	68%	72%	76%	80%	85%	90%	95%	100%	104%	108%	112%	116%	120%

Talent

Blood for Blood

Enhance

For each 1% of HP lost, accumulates 1 point of Charge (up to 200 points). When Charge reaches 100, consumes 100 points of Charge to enter the "Vendetta" state, restores HP equal to 25% of Mydei's Max HP, and advances action by 100%. While the "Vendetta" state is active, Max HP increases by 50% of the current Max HP and DEF remains at 0. At the start of this unit's turn, automatically uses "Kingslayer Be King." When Charge reaches 150 points during the "Vendetta" state, Mydei immediately gains 1 extra turn and automatically uses "Godslayer Be God." When receiving a killing blow during the "Vendetta" state, Mydei will not be knocked down, but will clear his Charge, exits the "Vendetta" state, and restores HP by 50% of his Max HP.

Ability level

10 is the cap from trace materials; Eidolons add the rest.

Heal: 25%

All 15 levels

Attribute	1	2	3	4	5	6	7	8	9	10	11	12	13	14	15
Heal	15%	16%	17%	18%	19%	20%	21%	23%	24%	25%	26%	27%	28%	29%	30%

Technique and fixed effects

1 fixed

Technique

Cage of Broken Lance

Impair

After using Technique, pulls in enemies within a certain area and inflicts Daze on them for 10 second(s). Dazed enemies will not actively attack ally targets. If actively attacking Dazed enemies, when entering battle, deals Imaginary DMG equal to 80% of Mydei's Max HP to all enemies, and Taunts the targets, lasting for 1 turn(s). This unit accumulates 50 point(s) of Talent's Charge.

Bonus Abilities

3 unlocked by ascension

A2
Earth and Water
During the "Vendetta" state, Mydei will not exit the "Vendetta" state when receiving a killing blow. This effect can trigger 3 time(s) per battle.
A4
Thirty Tyrants
While in the "Vendetta" state, Mydei is immune to Crowd Control debuffs.
A6
Bloodied Chiton
When battle starts, if Mydei's Max HP exceeds 4000, for every 100 excess HP, Mydei's CRIT Rate increases by 1.2%, his Charge ratio from enemy targets' DMG increases by 2.5%, and his HP restored when receiving healing increases by 0.75%. Up to 4000 excess HP can be taken into account for this effect.

Stat traces

Every node taken

CRIT DMG: 37.3%
Max HP: 18.0%
SPD: 5

Totals at full unlock, summed across every node of that stat. Ascension rank gates the nodes as it gates the Bonus Abilities above.

Full bill

Credits, summed from the tables below

Level 80 and every ability maxed

3,570,500

Credits 12 material lines

Ascension to 80

308,000

Credits 4 materials · 6 steps

All 5 abilities maxed

3,262,500

Credits 5× the single-ability bill

Ascension

Level 1 → 80 in 6 steps

Lv 30
Fear-Stomped Flesh ×5
4,000Credits
Lv 40
Fear-Stomped Flesh ×10
8,000Credits
Lv 50
Harbinger of Strife ×3
Courage-Torn Chest ×6
16,000Credits
Lv 60
Harbinger of Strife ×7
Courage-Torn Chest ×9
40,000Credits
Lv 70
Glory-Aspersed Torso ×6
Harbinger of Strife ×20
80,000Credits
Lv 80
Glory-Aspersed Torso ×9
Harbinger of Strife ×35
160,000Credits

Total to level 80

308,000 Credits

Glory-Aspersed Torso

Harbinger of Strife

Courage-Torn Chest

Fear-Stomped Flesh

Trace materials

Per ability · 5 levellable

→ 2
Fear-Stomped Flesh ×3
2,500Credits
→ 3
Borisin Teeth ×3
Fear-Stomped Flesh ×6
5,000Credits
→ 4
Courage-Torn Chest ×3
Lupitoxin Sawteeth ×3
10,000Credits
→ 5
Courage-Torn Chest ×4
Lupitoxin Sawteeth ×5
20,000Credits
→ 6
Courage-Torn Chest ×6
Lupitoxin Sawteeth ×7
30,000Credits
→ 7
Glory-Aspersed Torso ×3
Moon Rage Fang ×3
45,000Credits
→ 8
Auspice Sliver ×1
Glory-Aspersed Torso ×4
Moon Rage Fang ×5
80,000Credits
→ 9
Tracks of Destiny ×1
Auspice Sliver ×1
Moon Rage Fang ×8
160,000Credits
→ 10
Tracks of Destiny ×1
Auspice Sliver ×1
Moon Rage Fang ×14
300,000Credits

One ability maxed

652,500 Credits

Tracks of Destiny

Auspice Sliver

Glory-Aspersed Torso

Moon Rage Fang

Courage-Torn Chest

Lupitoxin Sawteeth

Borisin Teeth

Fear-Stomped Flesh

All 5 abilities maxed

3,262,500 Credits

Tracks of Destiny

Auspice Sliver

Glory-Aspersed Torso

Moon Rage Fang

Courage-Torn Chest

Lupitoxin Sawteeth

Borisin Teeth

Fear-Stomped Flesh

Mydei’s Eidolons

6 unlocks

E1
Frost Hones Spine of Steel
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
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.
E3
Honor Exalts Feast of Faith
Skill Lv. +2, up to a maximum of Lv. 15. Basic ATK Lv. +1, up to a maximum of Lv. 10.
E4
Siren Jolts the Laconic Lion
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.
E5
War Chisels Flesh of Flame
Ultimate Lv. +2, up to a maximum of Lv. 15. Talent Lv. +2, up to a maximum of Lv. 15.
E6
Legacy Scales Mound of Blood
When entering battle, immediately enters the "Vendetta" state, and lowers the Charge required for "Godslayer Be God" to 100 point(s).

Mydei FAQ

What Combat Type is Mydei?: Mydei is a 5-star Imaginary character on the Path of Destruction, from Amphoreus, released in version 3.1.
What stat does Mydei scale on?: Mydei's abilities multiply HP. That is read from the scaling rows on the Skill and Ultimate, not from the ability description, so it reflects what the game actually multiplies rather than what the text mentions.
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.
How much does it cost to max Mydei's traces?: Taking one ability from level 1 to 10 costs 652,500 Credits and 2× Tracks of Destiny among other materials. The Materials tab lists every item per level.
What does Mydei E1 do?: Frost Hones Spine of Steel: 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.

Mydei

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

Abilities

Technique and fixed effects

Bonus Abilities

Earth and Water

Thirty Tyrants

Bloodied Chiton

Stat traces

Full bill

Ascension

Trace materials

Mydei’s Eidolons

Frost Hones Spine of Steel

Strife Beholds Cry of Dead

Honor Exalts Feast of Faith

Siren Jolts the Laconic Lion

War Chisels Flesh of Flame

Legacy Scales Mound of Blood

Mydei FAQ