Mydei Mastery: Top Builds, Light Cones, Relics & Team Strategies

Utilizing the best builds for Mydei in Honkai: Star Rail can greatly enhance his performance as a damage dealer in battles. To maximize Mydei’s potential, you’ll need to equip him with the most effective Light Cones, Relics, stats, and team compositions. He is a 5-star Imaginary character on the Path of Destruction, which positions him as a formidable DPS with abilities to sustain himself. Set to debut in Version 3.1, Mydei is poised to usher in a new era in the HP-centric meta of Honkai: Star Rail, with his mechanics centered on sacrificing his own HP to boost his attack power against foes.

Mydei’s kit allows him to monitor his lost HP. When he accumulates enough HP loss, he activates the Vendetta state, which not only amplifies his Max HP—and thereby his damage—but also enables him to utilize a more powerful version of his Skill. While Mydei’s DEF will drop to zero during this state, if he suffers a lethal hit, he regains 50% of his HP and can rejoin the fight. To effectively leverage Mydei’s abilities in Honkai: Star Rail, you must construct his build with the appropriate equipment choices.

Optimal Light Cones for Mydei

Seek Out Destruction Light Cones that Enhance HP

To begin developing Mydei’s build, your first step should be selecting a weapon. The ideal Light Cone for Mydei is Flame Of Blood, Blaze My Path, his unique 5-star Light Cone. This piece of equipment boosts the user’s Max HP by 18% and Incoming Healing by 20%. When using a Skill or Ultimate, it consumes HP equal to 6% of the user’s Max HP while increasing damage dealt by 30%. If the HP consumed exceeds 500, the damage output increases further by an additional 30%. However, if the HP consumed is insufficient, the user’s HP will drop to 1.

The following table summarizes the best builds for Mydei in Honkai: Star Rail, including recommended Light Cones, optimal Relics and Ornaments, prioritized stats, and more:

Flame Of Blood, Blaze My Path complements Mydei’s abilities perfectly, as it not only enhances his HP—which is critical for boosting his attack power—but also increases his healing capabilities. Additionally, while it drains HP with each Skill/Ultimate, it compensates by providing a massive 60% damage boost if more than 500 HP is consumed via the Light Cone’s effect (excluding the HP loss from his Skill). This Light Cone demands that Mydei maintains a high Max HP for optimal results in his risky playstyle.

If you can’t acquire Mydei’s signature Light Cone, several alternatives exist. The Unreachable Side, Blade’s unique Light Cone, is a solid option—especially if you prefer Mydei over Blade in Honkai: Star Rail. This Light Cone enhances the user’s CRIT Rate and Max HP by 18%. When the user receives damage or uses their own HP, their damage increases by 24%, although this effect is reset after the attack. Despite providing less overall damage enhancement, it provides valuable boosts to Both CRIT Rate and Max HP, significant assets for Mydei.

Since Flame Of Blood, Blaze My Path and The Unreachable Side are both high-tier Light Cones, they might not always be accessible. In such scenarios, consider the 4-star Light Cone Ninja Record – Sound Hunt. This option enhances the user’s Max HP by 12%, and anytime HP is lost or restored, it raises CRIT DMG by 18% for two turns. Remember that this Light Cone is an event-exclusive, which may affect availability.

Alternatively, you could opt for Flames Afar. If the user experiences HP loss surpassing 25% of their Max HP during one attack, or if the HP consumed in a single instance exceeds 25% of their Max HP, they will be healed for 15% of their Max HP. This also boosts their damage by 25% for two turns. The key to picking the optimal Light Cone for Mydei is selecting one that interacts favorably with HP fluctuations, providing damage enhancements while potentially increasing Max HP.

Top Relics, Ornaments, & Stats for Mydei

CRIT Rate Shouldn’t Be Your Primary Focus

For Relics, the top set for Mydei is Scholar Lost in Erudition. Its two-piece bonus raises the user’s CRIT Rate by 8%, while the four-piece bonus boosts damage from the user’s Ultimate and Skill by 20%. Moreover, after using an Ultimate, the next Skill will inflict 25% more damage. This fits seamlessly into Mydei’s kit, as he primarily relies on boostings in his Skill and Ultimate damage. The Longevous Disciple set is an option as well, though it’s less effective than the Scholar Lost in Erudition.

The ideal Planar Ornament set for Mydei is Bone Collection’s Serene Demesne. This set grants a 12% boost to Max HP and, if the user’s Max HP exceeds 5,000, it increases the user’s and their memosprite’s CRIT DMG by 28%. While Mydei lacks a memosprite, he will still maintain over 5,000 Max HP, making the CRIT DMG enhancement extremely beneficial. This is likely to be the best-in-class Ornament set for Castorice in Honkai: Star Rail 3.2.

When farming Relics and Ornaments for Mydei, prioritize stats like HP, CRIT DMG, SPD, and Imaginary DMG. A modicum of CRIT Rate is valuable, but overinvesting isn’t necessary since Mydei has a passive Trace called Bloodied Chiton. This ability increases his CRIT Rate by 1.2% for every 100 HP over 4,000 his Max HP exceeds, capping at 48% CRIT Rate if players achieve 8,000 Max HP or higher.

In addition to his passive bonus, Mydei should also gain an extra 8% from the Scholar of Lost Erudition set and 5% from his base kit, which brings his total CRIT Rate to 61%. If players also completed Sunday’s build in Honkai: Star Rail, an additional 20% is available from his passive, raising Mydei’s CRIT Rate to 81%. Moreover, if the Remembrance Trailblazer at E1 or higher targets Mydei with Mem’s Support, he will receive another 10% increase in CRIT Rate. Consequently, investment in Mydei should focus heavily on HP and CRIT DMG.

Optimal Team Compositions for Mydei

Best Suited for Hypercarry Teams

Mydei’s team compositions can vary, but he should consistently be a primary DPS within the roster. His teammates should be selected to optimize his damage output. Mydei thrives alongside Tribbie, who provides RES PEN and can further amplify her damage based on her partners’ Max HP. Sunday also offers robust support, as do the Remembrance Trailblazer and Sparkle, the latter of whom enhances CRIT DMG, facilitates action progression, and can replenish Skill Points.

The following table presents a few team composition recommendations for Mydei in Honkai: Star Rail:

Remember to include a reliable healing character in your setup. A unit like Huohuo excels at keeping the team alive—her high Max HP synergizes well with Tribbie’s damage. Luocha is also effective due to his auto-healing abilities that restore HP whenever he attacks. While Mydei possesses ways to recover on his own, additional healing will be beneficial as he often loses HP rapidly; crucially, healing does not affect his Charge points toward Vendetta (damage taken that reduces his HP still counts toward Charge).

Skill (Trace) Leveling Priority for Mydei

Don’t Overlook Leveling His Talent as Well

Once you have gathered all the pertinent materials to level up Mydei in Honkai: Star Rail, your initial focus should be leveling his Skill and Ultimate concurrently. Both abilities play a crucial role in his rotation, making their enhancement a top priority. Next, don’t neglect his Talent, which provides HP restoration and eases the workload of your healer. Mydei’s Basic Attacks should be your last priority—while not unimportant, they may not need extensive investment as poor Skill Point management may force their usage.

In summary, Mydei boasts a relatively simple build. His minimal reliance on CRIT Rate simplifies the process of focusing on CRIT DMG and HP, while his robust kit positions him as a great asset for hypercarry teams—provided that his supports don’t prioritize ATK buffs, which won’t benefit him. If you manage to optimize his build and get him to at least 8,000 Max HP (with aspirations for even higher), you will definitely have a formidable HP-centric damage dealer at your disposal in Honkai: Star Rail that can easily take the place of Blade.