Honkai: Star Rail - Mydei Build Guide

Honkai: Star Rail's Mydei: A Comprehensive Guide to Building the Five-Star Imaginary DPS

In Honkai: Star Rail, encountering Mydei on the Amphoreus planet throws the Trailblazer and Dan Heng into immediate chaos. This engaging storyline introduces you to various Chrysos Heir and allies who aid your journey. Mydei, a powerful addition to the playable roster (released in Version 3.1), perfectly embodies his in-game persona. This guide details everything you need for optimal Mydei build.

Mydei Overview

	Rarity	Five-Star
	Path	Destruction
	Combat Type	Imaginary
	Overworld Rating	S Tier
	Memory of Chaos Rating	S Tier
	Pure Fiction Rating	A Tier
	Apocalyptic Shadow Rating	S Tier

As a prominent Chrysos Heir, Mydei excels as a main DPS, inflicting maximum damage on Imaginary-weak enemies. His unique gameplay mechanic keeps him in perpetual auto-battle, even during manual combat. While unconventional, this design remains engaging, especially with a well-crafted build and strategic team composition. Before enhancing his Light Cones and Relics, understanding his kit is crucial:

Mydei's Kit Explained

Ability Name	Type	Effect
Vow of Voyage	Basic Attack	Inflicts Imaginary DMG to a single enemy (never used in combat).
Deaths are Legion, Regrets are None	Normal Skill	Consumes 50% HP to damage three adjacent enemies, with the primary target receiving the highest damage.
Throne of Bones	Ultimate	Damages three adjacent enemies, restores Mydei's HP, taunts enemies for two turns, and grants 20 charge.
Blood for Blood	Talent	For each 1% HP lost, gains 1 charge. At 100 charge, enters Vendetta state, restoring and increasing HP by 50% while setting DEF to 0.
Kingslayer Be King	Second Skill	Consumes 35% HP to deal higher damage to three adjacent targets than the Normal Skill.
Godslayer Be God	Final Skill	Consumes 150 charge for significantly higher damage to three adjacent enemies; his most potent attack.
Cage of Broken Lance	Technique	Pulls nearby enemies, applying Daze for ten seconds. Dazing enemies at battle start inflicts Imaginary DMG, taunts them, and grants 50 charge.
Earth and Water	Bonus Ability	Three times per battle, Mydei remains in Vendetta state even after a fatal blow.
Thirty Tyrants	Bonus Ability	Immune to crowd control in Vendetta state.
Bloodied Chiton	Bonus Ability	Each 100 HP above 4,000 grants increased Crit Rate, charge accumulation from enemy damage, and incoming healing.

If insufficient HP exists for skill activation, Mydei's HP is reduced to one. Mydei's self-sufficiency is evident; he heals and revives himself (up to three times) without drawbacks. His kit significantly boosts Crit Rate, although this impacts relic stat optimization.

Mydei's Eidolons Explained

Mydei's Eidolons (obtained through duplicate pulls) dramatically enhance his damage output:

1. Final Skill deals 30% more damage to all enemies, with equal multipliers to all targets.
2. Mydei ignores 15% enemy DEF in Vendetta, gaining up to 40 charge upon healing (40% healing conversion rate).
3. Increased Skill and Basic ATK levels.
4. Gains 30% Crit DMG and restores 10% HP in Vendetta upon enemy attacks.
5. Increased Ultimate and Talent levels.
6. Starts battles in Vendetta state and uses the Final Skill with only 100 charge.

Best Builds for Mydei

Building Mydei involves selecting Light Cones, Relics, and Planar Ornaments. Each Light Cone possesses unique passives; Relics and Planar Ornaments offer special bonuses when using two or four pieces from the same set.

Mydei's optimal Light Cone is his signature, Flames of Blood, Blaze My Path. Scholar Lost in Erudition and Bone Collection's Serene Demesne are his best Relics and Planar Ornaments, respectively. Alternatives are available if these are unavailable:

Best Mydei Light Cones

Flames of Blood, Blaze My Path	Grants extra Max HP, incoming healing, and charge based on Refinement levels.
The Unreachable Side	Provides Crit Rate, Max HP, and increased DMG upon HP loss; however, over-critting can be an issue.
Flames Afar	Triggers upon HP consumption (above 25%), healing and increasing DMG for two turns.
Ninja Record: Sound Hunt	F2P-friendly; increases HP and Crit DMG upon HP changes.
Collapsing Sky	Three-star option at max refinement, providing a 40% DMG boost to Mydei's Skill.

Best Mydei Relics

Scholar Lost in Erudition	Increases Skill and Ultimate DMG by 20%, providing a decent Crit Rate.
Longevous Disciple	Offers HP and Crit boosts upon HP loss, suitable if Ultimate timing optimization isn't a priority.
Wastelander of Banditry Desert	Early-game option increasing DMG; requires a debuffer and Imaginary Weakness break for optimal results.

Best Mydei Planar Ornaments

Bone Collection's Serene Demesne	Increases HP and provides a 28% Crit DMG boost.
Sigonia, the Unclaimed Desolation	Offers Crit Rate and Crit DMG upon defeating enemies; best in Pure Fiction.
Rutilant Arena	Early-game option boosting Crit Rate and Skill DMG.

Mydei Stat Priority

Type	Main Stat Priority	Sub-Stat Priority
Head	HP	Crit DMG > HP Percent > Crit Rate > SPD
Hands	ATK	Crit DMG > HP Percent > Crit Rate > SPD
Body	Crit DMG	HP Percent > Crit Rate > SPD
Feet	SPD	Crit DMG > HP Percent > Crit Rate
Planar Sphere	Imaginary DMG Bonus	Crit DMG > HP Percent > Crit Rate > SPD
Link Rope	HP Percent	Crit DMG > Crit Rate > SPD

Mydei's high base Crit Rate (48%) and potential relic bonuses reduce Crit Rate's priority. Teammates like the Sunday or Remembrance Trailblazer further diminish this need.

Mydei Trace Priority

Prioritize upgrading Mydei's Skill (to at least level eight) due to its multiplier across all modes. Then, focus on his Ultimate. Level his Talent to eight to maximize HP gain in Vendetta; further upgrades aren't essential. Ignore his Basic Attack. Upgrade bonus abilities in this order: Bloodied Chiton > Thirty Tyrants > Earth and Water.

Is Mydei Worth Pulling?

Mydei is a top-tier DPS upon release, but his arrival precedes the highly anticipated Castorice and Anaxa. While meta-defining now, future Imaginary DPS characters may surpass him. For Eidolons, the second one is a worthwhile stopping point; prioritize his Light Cone before Eidolons. Ultimately, prioritize characters you enjoy, as Honkai: Star Rail's meta is dynamic.

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