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♦ Latest: Livestream Summary, 3.1 Summary & Amphoreus Guide
♦ Phase 1: Tribbie, Yunli, Hook, Lynx, Guinaifen
♦ Phase 2: Mydei, Huohuo, Arlan, Xueyi, Natasha
♦ 3.2 Characters: Castorice & Anaxa
♦ 3.3 Characters: Hyacine & Cipher
♦ New Events: The Awooo Firm & Protean Hero
Mydei is an Imaginary and Destruction character in Honkai: Star Rail. Check out this guide for Mydei's best builds, teams, relics, light cones, ratings, and how to play them!
Mydei Character Guides | ||
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List of Contents
Mydei Basic Information | ||
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Rarity | |
Element | ||
Path | ||
General Rating | Endgame Rating | |
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General Ratings are based on E0.
Endgame Ratings are based on enemies and buffs for the current patch.
Stat | Base Value |
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HP (1st) | 211 |
ATK (27th) | 58 |
DEF (27th) | 26 |
SPD (18th) | 95 |
Stat | Base Value |
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HP (1st) | 1552 |
ATK (27th) | 426 |
DEF (27th) | 194 |
SPD (18th) | 95 |
The stats indicated above are Mydei's base values. These numbers do not include the character's equipped Light Cone, Relics, or activated Trace nodes. |
Mydei is a strong Destruction DPS who consumes his own HP to dish out high Skill DMG. Mydei's Skill gets stronger the more Charge stacks Mydei has.
Do note that when Mydei enters the Vendetta state, you cannot control him manually and he will attack enemies at random.
If you still don't have a limited Imaginary DPS or are into HP-consumption gameplay for more DMG, Mydei is worth pulling!
Mydei's Light Cone, Flame of Blood, Blaze My Path, provides HP stats and helps him deal more Skill and Ultimate DMG whenever he consumes HP. If Mydei consumes more HP, the DMG bonus becomes stronger.
While Mydei becomes significantly stronger with Flame of Blood, Blaze My Path, you can skip this if you have other Light Cones such as The Unreachable Side or Ninja Record - Sound Hunt.
Flame of Blood, Blaze My Path Guide
Best Light Cone | Relics and Ornament | |||
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Main Stats | Sub Stats | |||
Body: CRIT DMG Feet: SPD Sphere: Imaginary DMG or HP% Rope: HP% | HP% ★★★ CRIT Rate ★★★ SPD ★★ CRIT DMG ★★ |
Alternative Light Cones | |
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Mydei's best build uses the Scholar of Lost Erudtion since most of his DMG comes from his Skill, and Bone Collection's Serene Demesne since he has a high HP stat. Mydei has an innate CRIT Rate from the Bloodied Chiton Bonus Ability, so using a CRIT DMG piece should be prioritized.
Stat | Recommended Value |
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HP | 8000 or above outside of combat |
CRIT Rate | 90% - 100% during combat |
CRIT DMG | 150% or above |
SPD | 134/135 or Any SPD Breakpoint above |
Mydei needs to have at least 8000 HP outside of combat so he can get the maximum CRIT Rate boost from Bloodied Chiton. You can use an HP Sphere to reach the HP threshold easily.
As for CRIT Rate, he should have at least 90% or nearly 100% CRIT Rate for consistent critical hits.
DPS | Support | Support | Sustain |
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In this free-to-play team, Mydei can use the Remembrance Trailblazer for the CRIT DMG buff and Pela for DEF shred. Lynx is a great free-to-play sustain for Mydei as she can increase his Max HP and his chances of getting hit by the enemy.
DPS | Support | Support | Sustain |
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Mydei's best team features Sunday for Turn Advance and Energy Regen, and Tribbie for additional DMG and All-Type RES PEN. Tribbie's DMG will increase with Mydei on the team since he has a high HP stat.
Luocha will be Mydei's best sustain thanks to his absurd amounts of healing.
Alternative | Explanation |
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![]() | Support Replacement Remembrance Trailblazer can provide True DMG buffs and turn advance. |
![]() | Support Replacement Bronya can provide turn advance with her Skill. |
![]() | Support Replacement Sparkle can provide turn advance and extra Skill Points. |
![]() | Support Replacement Pela's Ultimate can decrease enemy DEF. |
![]() | Sustain Replacement Lingsha provides a lot of healing with her kit and can do emergency heals. |
![]() | Sustain Replacement Gallagher can provide healing through Bessoted. |
![]() | Sustain Replacement Lynx can increase Max HP and increase Mydei's chances of getting hit. |
Relics | Rating & Merits |
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★★★★★ - Best Scholar Lost in Erudition is Mydei's best Relic set since most of Mydei's DMG will come from his Skill. This will also increase his CRIT Rate by 8%. |
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★★★★☆ - 2nd Best Longevous Disciple is a great Relic for Mydei since he can consume his own HP to get up to 16% CRIT Rate. |
Ornaments | Merits |
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★★★★★ - Best Bone Collection's Serene Demesne is Mydei's best ornament since he can easily reach the 5000 HP threshold for the CRIT DMG bonus. |
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★★★★☆ - 2nd Best Rutilant Arena is the second-best option since it can increase Mydei's Skill DMG as long as he has at least 70% CRIT Rate. |
Light Cone | Why We Recommend It |
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★★★★★ - Best Flame of Blood, Blaze My Path is Mydei's signature Light Cone. It increases his Max HP and incoming healing. It also gives him a DMG boost when using his Skill and Ultimate. |
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★★★★☆ - Great The Unreachable Side is a strong Light Cone on Mydei since it provides a boost to CRIT Rate and HP%, and increases his DMG when he consumes his HP. |
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★★★★☆ - Great Ninja Record - Sound Hunt is Mydei's best 4-star Light Cone since it provides HP% and increases his CRIT DMG whenever he consumes his HP or restores it. |
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★★★☆☆ - Good Flames Afar is a more accessible Light Cone that increases Mydei's DMG if he consumes enough HP. This also provides some more self-healing. |
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★★★☆☆ - Good A Secret Vow simply provides a DMG boost to Mydei. The effect may be inconsistent depending on how much HP Mydei currently has. |
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★★☆☆☆ - Okay Collapsing Sky provides a Skill DMG boost to Mydei. |
Why We Recommend It | |
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E1 | ★★★★★ - Amazing Best stopping-point for spenders. Godslayer Be God can now deal more DMG to the primary target and hit enemies on the field. |
E2 | ★★★★☆ - Great Mydei can get more Charge from restoring his HP and ignore the enemy's DEF during the Vendetta state. |
E4 | ★★★★☆ - Great During the Vendetta state. Mydei gets a CRIT DMG buff and will restore 10% HP whenever he gets hit by enemies. |
E6 | ★★★★★ - Amazing After entering combat, Mydei instantly enters the Vendetta state and the Charge needed to access Godslayer Be God gets lowered. |
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. |
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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). |
Trace | Priority & Explanation |
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Basic Attack | ★★☆☆☆ - Low Priority Mydei's Basic ATK should be upgraded last since you will be using his Skill more often than not. |
Skill | ★★★★★ - Highest Priority Most of Mydei's DMG will come from his Skill, so prioritize maxing this first. |
Ultimate | ★★★★★ - Highest Priority Mydei's Ultimate is also important to upgrade since it's used to deal DMG whenever it is available. |
Talent | ★★★★☆ - High Priority Mydei uses this to restore his own HP, so upgrade this after his Skill and Ultimate. |
Trace | Priority & Explanation |
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Earth and Water | ★★★★☆ - High Priority Mydei will no longer exit the Vendetta state upon death up to three times. |
Thirty Tyrants | ★★★★★ - Highest Priority This prevents Mydei from getting affected by Crowd Control debuffs from the Vendetta state. |
Bloodied Chiton | ★★★★★ - Highest Priority This unlocks Mydei's DMG output through innate CRIT Rate from having more than 4000 HP. |
Trace | Scaling and Explanation |
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Basic ATK | Vow of Voyage: Deals Imaginary DMG equal to 25% of Mydei's Max HP to one designated enemy. |
Skill | Deaths are Legion, Regrets are None: Consumes HP by an amount equal to 50% of Mydei's current HP. Deals Imaginary DMG equal to 45% of Mydei's Max HP to one designated enemy and Imaginary DMG equal to 25% of Mydei's Max HP to adjacent targets. If the current HP is not sufficient, using Skill reduces Mydei's current HP to 1. Kingslayer Be King: Consumes HP by an amount equal to 35% of Mydei's current HP. Deals Imaginary DMG equal to 55% of Mydei's Max HP to one enemy and Imaginary DMG equal to 33% 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. Godslayer Be God: Consumes 150 point(s) of Charge. Deals Imaginary DMG equal to 140% of Mydei's Max HP to one enemy and Imaginary DMG equal to 84% of Mydei's Max HP to adjacent targets. This ability will be automatically used. While this ability is in use, Charge cannot be accumulated. |
Ultimate | Throne of Bones: Restores HP by 15% of Mydei's Max HP and accumulates 20 Talent's Charge point(s). Deals Imaginary DMG equal to 96% of Mydei's Max HP to one designated enemy, and deals Imaginary DMG equal to 60% 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. |
Talent | Blood for Blood: 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 15% 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. |
Trace | Scaling and Explanation |
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Basic ATK | Vow of Voyage: Deals Imaginary DMG equal to 50% of Mydei's Max HP to one designated enemy. |
Skill | Deaths are Legion, Regrets are None: Consumes HP by an amount equal to 50% of Mydei's current HP. Deals Imaginary DMG equal to 45% of Mydei's Max HP to one designated enemy and Imaginary DMG equal to 25% of Mydei's Max HP to adjacent targets. If the current HP is not sufficient, using Skill reduces Mydei's current HP to 1. Kingslayer Be King: Consumes HP by an amount equal to 35% of Mydei's current HP. Deals Imaginary DMG equal to 83% of Mydei's Max HP to one 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. This ability will be automatically used. Godslayer Be God: Consumes 150 point(s) of Charge. Deals Imaginary DMG equal to 210% of Mydei's Max HP to one enemy and Imaginary DMG equal to 126% of Mydei's Max HP to adjacent targets. This ability will be automatically used. While this ability is in use, Charge cannot be accumulated. |
Ultimate | Throne of Bones: Restores HP by 17.5% of Mydei's Max HP and accumulates 20 Talent's Charge point(s). Deals Imaginary DMG equal to 128% of Mydei's Max HP to one designated enemy, and deals Imaginary DMG equal to 80% 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. |
Talent | Blood for Blood: 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 20% 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. |
Trace | Scaling and Explanation |
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Skill | Deaths are Legion, Regrets are None: Consumes HP by an amount equal to 50% of Mydei's current HP. Deals Imaginary DMG equal to 79% of Mydei's Max HP to one designated enemy and Imaginary DMG equal to 44% of Mydei's Max HP to adjacent targets. If the current HP is not sufficient, using Skill reduces Mydei's current HP to 1. Kingslayer Be King: Consumes HP by an amount equal to 35% of Mydei's current HP. Deals Imaginary DMG equal to 96% of Mydei's Max HP to one enemy and Imaginary DMG equal to 58% 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. Godslayer Be God: Consumes 150 point(s) of Charge. Deals Imaginary DMG equal to 245% of Mydei's Max HP to one enemy and Imaginary DMG equal to 147% of Mydei's Max HP to adjacent targets. This ability will be automatically used. While this ability is in use, Charge cannot be accumulated. |
Ultimate | Throne of Bones: Restores HP by 18.8% of Mydei's Max HP and accumulates 20 Talent's Charge point(s). Deals Imaginary DMG equal to 144% of Mydei's Max HP to one designated enemy, and deals Imaginary DMG equal to 90% 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. |
Talent | Blood for Blood: 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 22% 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. |
Trace | Scaling and Explanation |
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Skill | Deaths are Legion, Regrets are None: 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. Kingslayer Be King: 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. Godslayer Be God: 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. |
Ultimate | Throne of Bones: Restores HP by 20% 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. |
Talent | Blood for Blood: 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. |
Trace | Scaling and Explanation |
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Technique | Cage of Broken Lance: 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.
Stat Bonus: 1. CRIT DMG +5.3% |
Bonus Ability | 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 Incoming Healing increases by 0.75%. Up to 4000 excess HP can be taken into account for this effect.
Stat Bonus: 1. SPD +2 2. Max HP +8.0% 3. CRIT DMG +10.7% |
Bonus Ability | Thirty Tyrants: While in the ''Vendetta'' state, Mydei is immune to Crowd Control debuffs.
Stat Bonus: 1. CRIT DMG +8.0% 2. Max HP +6.0% 3. CRIT DMG +8.0% |
Bonus Ability | Earth and Water: During the "Vendetta" state, Mydei will not exit the "Vendetta" state when receiving a killing blow. This effect can trigger multiple times per battle.
Stat Bonus: 1. Max HP +4.0% 2. CRIT DMG +5.3% 3. SPD +2 |
Using Mydei's Skill will consume his own HP and then deal Blast DMG to enemies.
Mydei gains Charge stacks after losing HP. After getting at least 100 Charge stacks, Mydei's HP gets restored and he enters the Vendetta state.
While Mydei starts his turn during the Vendetta state, he will unleash an AoE attack. Mydei will unleash Kingslayer Be King or Godslayer Be God depending on the number of Charge stacks he has.
Mydei's Ultimate can restore his own HP and accumulate Charge Stacks. This will allow the next instance of Godslayer Be God to prioritize the main enemy targeted by the Ultimate.
Ascension Materials | Total |
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15 | |
15 | |
15 | |
65 | |
308,000 |
All Trace Node Materials | Total |
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15 | |
41 | |
72 | |
56 | |
139 | |
58 | |
12 | |
8 | |
3,000,000 |
Lvl | Basic ATK Ascension Materials |
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Lvl | Skill, Talent, & Ult Ascension Materials |
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Nodes | Bonus Stat and Abilities Materials |
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Limited Banners | |
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![]() Fiery Lionheart |
Mydei's banner is currently up in the second phase of Version 3.1. Mydei's Banner, Fiery Lionheart, will run from March 19, 2025, to April 8, 2025 (UTC-5).
Mydei Banner Release Date and Schedule
Voice Actor | EN: Gabriel Warburton JP: Yōhei Azakami |
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Faction / Affiliation | Chrysos Heirs |
Character Rarity | |
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★★★★ | ★★★★★ |
Character Paths | |||
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just got huo huo and then mydei at 9 pity guys!!
Mydei Best Builds and Teams
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Is Mydei worth pulling or save for Castorice?