Mortenax Blade Build: Best Relics, Light Cones & Elation Teams | HSR 4.3
2026-05-26
Trailblazers, the journey keeps moving — and in Version 4.3, a familiar face is finally returning. Blade, the Stellaron Hunter, is coming back with a brand-new SP form.
It is said that this legendary swordsmith of Xianzhou will regain his forging abilities in Version 4.3. In this article, we will briefly introduce Blade’s new combat capabilities.
“Torn flesh, tempered a thousand times into a blade... what kind of answer will it forge?”
Mortenax Blade’s Team Role
 | Rarity | ★★★★★ |
| Combat Path | Fire | |
| Combat Path | Nihility |
Similar to Blade on the Path of Destruction, Mortenax Blade remains a damage dealer who scales based on HP. Compared with his original kit, Mortenax Blade’s abilities have been enhanced to a certain extent, while also gaining a small amount of supportive utility.
After using his Ultimate, Blade will also gain a brand-new skill set, which means Mortenax Blade will be more flexible when it comes to team building.
Next, let’s take a closer look at this Stellaron Hunter’s new combat style.
Mortenax Blade Kit Overview
Basic ATK: A Broken Blade Still Slays
Basic attack does fire damage based on his max HP, and will cause the enemy target he hits to enter the “Taunt” state for one turn. His ultimate will inflict the firebale on all enemies.
Skill: A Rain of Blades Seals Fate
Uses Skill. Mortenax Blade consumes a certain percentage of his own HP to deal Fire DMG to all enemies, then deals several instances of Bounce DMG to a single enemy.
This Skill cannot be used when Mortenax Blade is not in the “Infinite Fury” state, or when his HP is equal to or lower than 1.
Ultimate Skill: Fornax Ex Corpore
Uses Ultimate. Mortenax Blade inflicts “Balefire Bind” on all enemies, reducing their DEF and increasing the DMG they receive. He then consumes his own HP to activate a zone.
While the zone is active, Mortenax Blade’s CRIT Rate increases, his Skill is unlocked, and he gains a new Ultimate. The barrier lasts until the countdown ends, or when the zone is removed when he receives a fatal attack.
Talent: All Karma Comes Due
While the zone is active, after an allied target attacks an enemy, that enemy is inflicted with “Balefire Bind”, and Mortenax Blade gains Charge.
When his Charge reaches a certain amount, Mortenax Blade restores Energy and additionally launches one free Skill. This Skill is considered a Follow-up Attack.
Technique: Blade’s Reach Spares None
Mortenax Blade uses his Technique to attack all enemies within range. After entering battle, he inflicts “Taunt” on all enemies and reduces his own DMG taken.
Enhanced Basic ATK: A Tempered Blade Severs Soul
Mortenax Blade deals a small amount of Fire DMG to a single enemy based on a certain percentage of his Max HP, and inflicts “Taunt” on the target.
Enhanced Ultimate: Tenax Per Ignem
Uses Enhanced Ultimate. Mortenax Blade deals massive Fire DMG to all enemies based on his HP-scaling multiplier.
Mortenax Blade’s Bonus Abilities
Bone, Hardened ad Nauseam
Mortenax Blade can store up to 80 points of overflow Energy. After using his Ultimate, the stored Energy is cleared, and the corresponding amount of Energy is restored.
At the start of battle or when the zone is removed, if his Energy is below 75%, it is immediately restored to 75%. When his Energy is restored to its maximum limit, all debuffs on him are removed.
Soul, Tempered ad Mortem
While the Zone is active, it increases the chance of being attacked by enemies, decreases DMG taken by this unit by 50%, and increases Incoming Healing by 50%.
After being attacked, inflicts the “Balefire Bind” state on the attacker, and Mortenax Blade gains 1 Charge.
Heart, Refined ad Infinitum
While the Zone is active, DMG dealt by ally targets increases by 50%. If there are other Nihility characters aside from Mortenax Blade in the ally team, Ultimate DMG dealt by ally targets increases by 75%. Otherwise, DMG dealt by Mortenax Blade additionally increases by 75%.
Mortenax Blade Eidolons Overview
Eidolon One: Ere My Death, I Stood Unmade
While the Zone is active, it decreases all enemies’ All-Type RES by 20%. After using the extra Skill from Talent, the “Infinite Fury” countdown has its action delayed by 15%.
Eidolon Two: Ash Was My Heart, Yet the Flame Stayed
When an ally character deals DMG by using their Ultimate, it is considered as having launched a Follow-Up ATK. The Follow-Up ATK DMG dealt by ally targets increases by 700%.
Eidolon Four: Odium I’ve Smitten, Thence Came the Blade
“Heart, Refined ad Infinitum” additionally increases ally targets’ DMG dealt by 50%.
Eidolon Six: If Immortality Could Die, I Swore THEM Slain
While the Zone is active, when Mortenax Blade takes DMG or consumes HP, he gains 1 Charge. This effect can be triggered again after any target’s turn ends. The DMG multiplier of “Tenax Per Ignem” increases to 150% of the original multiplier.
Recommended Relic Sets
| Concepts | Set Effect | Recommendation Rating |
 Divine-Querying Master Smith | 2-Pc: Increases Max HP by 12%.4-Pc: Increases the wearer's CRIT DMG dealt to enemy targets in the DEF reduction state by 28%. After the wearer inflicts the DEF reduction state on an enemy target, all allies gain "Comburent" for 2 turn(s). This effect cannot be stacked. DMG dealt by ally targets with "Comburent" increases by 15%. This effect can be triggered again after the wearer uses an attack. | ★★★★★ |
 Pioneer Diver of Dead Waters | 2-Pc: Increases DMG dealt to enemies with debuffs by 12%.4-Pc: Increases CRIT Rate by 4%. The wearer deals 8%/12% increased CRIT DMG to enemies with at least 2/3 debuffs. After the wearer inflicts a debuff on enemy targets, the aforementioned effects increase by 100%, lasting for 1 turn(s). | ★★★★ |
 Longevous Disciple | 2-Pc: Increases Max HP by 12%.4-Pc: When the wearer is hit or has their HP consumed by an ally or themselves, their CRIT Rate increases by 8% for 2 turn(s) and up to 2 stacks. | ★★★★ |
 Firesmith of Lava-Forging | 2-Pc: Increases Fire DMG by 10%.4-Pc: Increases DMG by the wearer's Skill by 12%. After unleashing Ultimate, increases the wearer's Fire DMG by 12% for the next attack. | ★★★ |
 Bone Collection's Serene Demesne | 2-Pc: Increases 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%. | ★★★★★ |
 Izumo Gensei and Takama Divine Realm | 2-Pc: Increases the wearer's ATK by 12%. When entering battle, if at least one teammate follows the same Path as the wearer, then the wearer's CRIT Rate increases by 12%. | ★★★★ |
 Rutilant Arena | 2-Pc: Increases the wearer's CRIT Rate by 8%. When the wearer's current CRIT Rate reaches 70% or higher, DMG dealt by Basic ATK and Skill increases by 20%. | ★★★★ |
Mortenax Blade’s Best Light Cones
| Concept | Description | Obtain Path |
 Reforged in Hellfire | Increases the wearer's Max HP by 30%. At the start of the wearer's turn, they regenerate a fixed amount of 20 Energy. This effect can trigger 1 time each wave. After the wearer uses a Skill Attack, inflicts the target with the "Purgatory" state, lasting for 2 turn(s). While in the "Purgatory" state, CRIT DMG taken by the target increases by 30%, and CRIT DMG taken from the wearer additionally increases by 30%. | Event Warp |
 Along the Passing Shore | Increases the wearer's CRIT DMG by 36%. When the wearer hits an enemy target, inflicts Mirage Fizzle on the enemy, lasting for 1 turn. Each time the wearer attacks, this effect can only trigger 1 time on each target. The wearer deals 24% increased DMG to targets afflicted with Mirage Fizzle, and the DMG dealt by Ultimate additionally increases by 24%. | Event Warp |
 Holiday Thermae Escapade | Increases the wearer's DMG dealt by 16%. After the wearer attacks, there is a 100% base chance to inflict the attacked target with Vulnerability, increasing the DMG they receive by 10% for 2 turn(s). Effects of the same type cannot stack. | Redeem from the Nameless Honor shop |
 Boundless Choreo | Increase the wearer's CRIT Rate by 8%. The wearer deals 24% more CRIT DMG to enemies that are currently Slowed or have reduced DEF. | Event Warp |
Mortenax Blade’s Best Team Compositions
| Teammates Recommendation |  Acheron |  Hyacine |
 Welt |  Sunday | |
 Huohuo |  Cipher | |
 Silver Wolf |  Ashveil | |
 Tribbie |
Conclusion
Mortenax Blade is a strong DPS who can slot into a wide range of teams. His Talent makes him especially good alongside other Nihility characters, boosting Ultimate damage while constantly applying debuffs to enemies. That also makes him a very useful pickup for Acheron teams.
His E2 also gives follow-up attacks a big boost, so once you start investing in his Eidolons, Mortenax Blade can fit naturally into follow-up-focused teams as well.
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