5-Star
Imaginary
The Destruction
S+ Tier
Imaginary
The DestructionA self-destructing juggernaut who converts his own HP into devastating Imaginary DMG. Mydei spends his life to fuel the Vendetta state, amplifying his Max HP by 50% and auto-firing Godslayer Be God, one of the hardest-hitting Blast attacks in the game, powered entirely off his massive HP pool.
Mydei
Chrysos Heir / King of VendettaBest Light Cone
Flame of Blood, Blaze My Path
Best Relic Set
Scholar Lost in Erudition 4pc
Planar Set
Bone Collection's Serene Demesne
Team Rule
Stack HP above 8000
Best Partner
Skills
Basic
Vow of Voyage
Deals Imaginary DMG equal to 25% of Mydei's Max HP to one designated enemy. Low usage in practice since the Skill almost always generates more value, but still contributes Charge buildup in quiet turns.
25%
of Max HP
Skill
Deaths are Legion, Regrets are None
Consumes 50% of current HP and deals Imaginary DMG equal to 45% of Max HP to the main target and 25% of Max HP to adjacent enemies. If HP is insufficient, it reduces current HP to 1 instead. In the Vendetta state this upgrades into Kingslayer Be King (55% + 33% Max HP), dealing even stronger Blast DMG automatically each turn.
45%
of Max HP
Ultimate
Throne of Bones
Restores HP equal to 15% of Max HP and grants 20 Charge. Deals Imaginary DMG equal to 96% of Max HP to one target and 60% of Max HP to adjacent enemies. Additionally Taunts the targeted enemies for 2 turns. The next use of Godslayer Be God will prioritize the Ultimate's target, making it ideal for focusing bosses.
96%
of Max HP
Talent
Blood for Blood
For each 1% of HP lost, Mydei accumulates 1 Charge (up to 200). At 100 Charge he enters the Vendetta state: his Max HP increases by 50%, DEF drops to 0, HP is restored by 15%, and his action advances by 100%. Each turn in Vendetta he auto-uses Kingslayer Be King. At 150 Charge he immediately gains an extra turn and auto-fires Godslayer Be God (140% of Max HP to main target, 84% to adjacent). If he would be killed in Vendetta he survives once, clears Charge, and restores 50% of Max HP.
140%
Godslayer Max HP
Technique
Cage of Broken Lance
Pulls nearby enemies together and inflicts Daze for 10 seconds. If you attack dazed enemies entering battle, deals Imaginary DMG equal to 80% of Max HP to all enemies, Taunts them for 1 turn, and grants 50 Charge from the start, cutting the time to first Vendetta significantly.
80%
wave start AoE
Build Targets
Relic Main Stats
Head
HP (fixed)
Hands
ATK (fixed)
Body
CRIT DMG
or HP%
Feet
Speed
Planar Sphere
HP%
or Imaginary DMG
Link Rope
HP%
Stat Targets
Substat Priority
01
CRIT Rate / CRIT DMG
balance 1:2
02
HP%
scales all hits
03
Speed
reach 134
04
DEF%
out of Vendetta
Skill Upgrade Order
Skill
1st
Ult
2nd
Talent
3rd
Basic
Last
Skill first since most of Mydei's DMG output comes from Kingslayer and Godslayer Be God. Ultimate second for the HP restore and Charge gain. Basic ATK is rarely used once Vendetta is active.
Best Light Cones
#1
Flame of Blood, Blaze My Path
His signature. Increases Max HP and incoming healing, then gives a stacking DMG bonus whenever he consumes HP via Skill or Ultimate. The HP loss from his kit synergizes perfectly with the passive, making this light cone scale with his own gameplay loop.
#2
The Unreachable Side
Strong alternative for Destruction characters. Provides CRIT Rate and HP%, and increases DMG whenever Mydei consumes HP, which is essentially every turn. Excellent if already owned from a previous banner.
#3
Ninja Record: Sound Hunt
Best 4-star option. Provides HP% and increases CRIT DMG whenever Mydei consumes or restores HP. Both triggers fire constantly in his kit, making this a very efficient free option.
#4
A Trail of Bygone Blood
A solid mid-tier Destruction cone that provides consistent DMG bonuses. Good for players who have it available and are waiting for better options.
#5
A Secret Vow
Budget option providing a DMG boost. The passive's condition can be inconsistent depending on Mydei's current HP state, but the base stats still represent a usable upgrade for players without better options.
Best Relics
Cavern Sets
1
Scholar Lost in Erudition
Best-in-slot cavern set for Mydei. The 4-piece bonus boosts CRIT Rate by 8% and increases DMG after using Skills, which is exactly how Mydei deals most of his damage. Since Kingslayer Be King fires automatically each Vendetta turn, the 4-piece bonus is essentially permanent in combat.
2
Longevous Disciple
Strong alternative. Mydei can easily trigger the HP consumption condition to stack up to 16% CRIT Rate from the 4-piece bonus. Works well if your Scholar pieces have poor substat rolls.
Planar Ornament Sets
1
Bone Collection's Serene Demesne
Best planar set for Mydei. Provides HP% from the 2-piece bonus and grants a CRIT DMG boost once HP surpasses 5000, a threshold Mydei easily clears, especially in Vendetta with his 50% Max HP increase. Stacks directly with his HP-scaling kit.
2
Rutilant Arena
Solid second option. Increases Skill DMG as long as Mydei maintains at least 70% CRIT Rate. His Bloodied Chiton trace generates CRIT Rate from excess HP, so this threshold is reachable with a proper build.
Best Teams for Mydei
Mydei thrives with supports who can buff Skill DMG, increase his HP, and provide healing to accelerate Charge buildup. Since his DEF drops to 0 during Vendetta, a reliable sustain unit is essential.
01 · Premium Hypercarry
Best-in-slot composition
02 · Dual DPS Variant
Mydei + Castorice synergy
03 · Sunday Flex
Action advance variant
04 · F2P Budget
All accessible characters
Remembrance Trailblazer provides CRIT DMG buffs and turn advance. Pela applies DEF shred with her Ultimate. Lynx increases Mydei's Max HP and raises his Taunt weight so enemies attack him more, generating more Charge during Vendetta. All four characters are either free or obtainable without limited banners.
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Eidolons
E
1
Frost Hones Spine of Steel
Increases the DMG multiplier dealt by Godslayer Be God to the primary target by +30%. This ability now also deals Imaginary DMG to all enemies equal to the full multiplier dealt to the primary target, effectively turning a single-target nuke into an AoE nuke without losing any damage on the main target.
Best Stopping Point
E
2
Strife Beholds Cry of Dead
During Vendetta, Mydei ignores 15% of enemy DEF. After receiving healing, 40% of the healed amount converts to Charge (up to 40 per heal trigger, resetting each action). This makes healers dramatically accelerate Mydei's Charge buildup and keeps his Vendetta cycling at a higher rate.
High Value
E
3
Honor Exalts Feast of Faith
Skill level +2 (max 15) and Basic ATK level +1 (max 10). Since Skill scaling drives most of Mydei's damage, the level increase provides a meaningful boost across all Kingslayer and Godslayer activations.
Solid Upgrade
E
4
Siren Jolts the Laconic Lion
While in Vendetta, CRIT DMG increases by +30% and Mydei restores 10% of Max HP whenever he receives attacks from enemy targets. The HP restore also feeds Charge via E2 for those who have it, creating a powerful loop.
Good Passive
E
5
War Chisels Flesh of Flame
Ultimate level +2 (max 15) and Talent level +2 (max 15). Incremental improvements to the HP restoration and Charge accumulation. Solid but not transformative compared to E1 or E2.
Incremental
E
6
Legacy Scales Mound of Blood
When entering battle, Mydei immediately enters the Vendetta state and lowers the Charge required for Godslayer Be God from 150 to 100 points. This means his most powerful attack fires far more frequently, drastically compressing his rotation and effectively doubling the rate of his hardest hits.
Massive Upgrade
Major Traces
Earth and Water
Ascension 2
During the Vendetta state, Mydei will not exit the Vendetta state when receiving a killing blow. This effect can trigger 3 times per battle, giving him extreme survivability windows despite his zero-DEF drawback in Vendetta.
Thirty Tyrants
Ascension 4
While in the Vendetta state, Mydei is immune to all Crowd Control debuffs. This prevents stuns, freezes, and imprisons from interrupting his Vendetta rotation, which is critical in late-game content where CC is common.
Bloodied Chiton
Ascension 6
When battle starts, if Mydei's Max HP exceeds 4000, for every 100 excess HP, his CRIT Rate increases by 1.2%, his Charge gain from enemy attacks increases by 2.5%, and his Incoming Healing increases by 0.75%. Up to 4000 excess HP counts, meaning a well-built Mydei can gain up to 48% CRIT Rate from this trace alone.
+18%
HP
+37.3%
CRIT DMG
+5%
SPD
Upgrade Materials
Fear-Stomped Flesh
Character Ascension
Borisin Teeth
Trace Material
Harbinger of Strife
Boss Drop
Auspice Sliver
Weekly Boss Drop
Frequently Asked Questions
No. Mydei performs well with Ninja Record: Sound Hunt (4-star) or The Unreachable Side at lower investment levels. His signature Flame of Blood, Blaze My Path is a meaningful upgrade due to the HP scaling synergy, but Ninja Record provides comparable 4-star value and is obtainable without spending on a limited banner.
Mydei accumulates Charge at 1 point per 1% HP lost (up to 200 points). At 100 Charge he enters Vendetta: his Max HP increases by 50%, DEF drops to 0, HP is restored by 15%, and action advances by 100%. While in Vendetta he auto-fires Kingslayer Be King at the start of each turn. At 150 Charge he gains an extra immediate turn and auto-fires Godslayer Be God. If he would be killed in Vendetta he survives, clears Charge, exits Vendetta, and restores 50% HP.
This is an intentional tradeoff of the Vendetta state. Mydei survives the zero-DEF window through his Earth and Water trace (up to 3 cheat-death triggers per battle), his Taunt forcing enemies to attack him (which he can absorb with his large HP pool), and reliable healers like Lynx or Gallagher restoring HP. At E2, receiving healing also converts 40% of the heal to Charge, making the incoming hits actively beneficial.
Scholar Lost in Erudition (4-piece) is his best cavern set because most of his damage comes from Skill-type hits, and Scholar's passive raises CRIT Rate by 8% while boosting Skill DMG. Longevous Disciple is a strong second option if your Scholar pieces have poor substats. For planars, Bone Collection's Serene Demesne provides HP% and a CRIT DMG boost once you clear 5000 HP, easily done in Vendetta.
Aim for at least 8000 HP out of Vendetta (which becomes 12000 HP in Vendetta with the 50% Max HP boost). The Bloodied Chiton trace gains CRIT Rate from every 100 HP above 4000 up to 4000 excess HP, meaning 8000 total HP gives you the maximum 48% CRIT Rate from that trace. Prioritize HP% main stats on Body, Sphere, and Rope; use CRIT DMG on Body if your CRIT Rate is already high from Bloodied Chiton.
E1 is the best stopping point for spenders: it turns Godslayer Be God into a full AoE nuke with +30% main-target DMG multiplier, which is a dramatic improvement in multi-enemy content. E2 is high value too, adding DEF ignore and converting healing into Charge. E6 is transformative (instant Vendetta at battle start, lower Godslayer Charge requirement) but costs 6 copies of a limited 5-star. For most players, E0 is sufficient for all endgame content.
