Honkai: Star Rail

Mortenax Blade

Nihility

Find the best builds and teams for Mortenax Blade in Honkai: Star Rail, including recommended Light Cones, Relics, and team compositions.

Body like spring wood, heart like dead ash. Yet embers of a craftsman's spark still linger at his fingertips. As ancient grudges are ignited once more, he promises to send both himself and the gods to the other side... Torn flesh, tempered a thousand times into a blade... What answer will it create?

Debuffer Build

Best Light Cone

Reforged in Hellfire

Reforged in Hellfire

Relics and Ornament

Divine-Querying Master Smith

Sprightly Vonwacq

Mortenax Blade Best Stats

Body: CRIT Rate

Feet: SPD

Sphere: HP%Fire DMG

Rope: Energy Regen

Mortenax Blade Best Substats

CRIT Rate

CRIT DMG

SPD

HP%

Mortenax Blade Best Relics

Divine-Querying Master Smith

Eagle of Twilight Line

Mortenax Blade Best Ornaments

Sprightly Vonwacq

Bone Collection's Serene Demesne

Lushaka, the Sunken Seas

Mortenax Blade Best Light Cones

Reforged in Hellfire

Lies Dance on the Breeze

Before the Tutorial Mission Starts

Resolution Shines As Pearls of Sweat

Holiday Thermae Escapade

Good Night and Sleep Well

Mortenax Blade Best Teams

Mortenax Blade Hypercarry — Acheron

Since Mortenax Blade is a general debuffer, you can pair him up with most hypercarry Main DPS to give them a lot of vulnerability and damage increase to work with. You can run him with another hypercarry support, then a sustain character to complete the team.

Mortenax Blade

Acheron

Welt

Dan Heng • Permansor Terrae

Mortenax Blade Hypercarry — Archer

Mortenax Blade works as the debuffer for a hypercarry Archer team, paired with another hypercarry support and a sustain unit.

Mortenax Blade

Archer

Sparkle

Dan Heng • Permansor Terrae

Mortenax Blade Hypercarry — Ashveil

Mortenax Blade works as the debuffer for a hypercarry Ashveil team, paired with another hypercarry support and a sustain unit.

Mortenax Blade

Ashveil

Robin

Dan Heng • Permansor Terrae

Mortenax Blade Hypercarry — The Herta

Mortenax Blade supports The Herta as the main hypercarry, with any Erudition DPS/Sub-DPS filling the flex slot and a sustain character completing the team.

Mortenax Blade

The Herta

DPS/Sub-DPS

any_erudition

Dan Heng • Permansor Terrae

Mortenax Blade Beginner F2P Team

For beginners who don't have any limited 4-Star or 5-Star characters yet, Mortenax Blade can be used as your debuffer or DPS in the team. March 7th (The Hunt) increases Mortenax Blade's SPD while dealing good damage of her own. Asta increases the party's SPD and ATK. Lynx will be the team's sustain unit.

Mortenax Blade

March 7th • Imaginary

Asta

Lynx

Mortenax Blade Nihility Team — Acheron

Mortenax Blade can also be used in a mostly Nihility team, with Acheron as the main DPS. You can run the team either sustainless or with a sustain character, as both compositions are viable. Sustainless teams are better with Welt since he can delay enemies.

Mortenax Blade

Acheron

Welt

Ashveil

Mortenax Blade Follow-Up ATK Team — Ashveil

Mortenax Blade can also be used in a Follow-Up ATK team, with Ashveil as the main DPS. Since his additional Skill from his Talent counts as a Follow-Up ATK, he will benefit from all the buffs a Follow-Up ATK team can provide. Use sustain characters that attack frequently to help trigger Ashveil's Follow-Up ATKs.

Mortenax Blade

Ashveil

Tribbie

Dan Heng • Permansor Terrae

Skills

A Broken Blade Still Slays

Basic ATK

Single Target

Deals Fire DMG equal to 70% of Mortenax Blade's Max HP to one designated enemy, and causes the target to enter the Taunt state for 1 turn.

Lv. 10

A Rain of Blades Seals Fate

Skill

AoE

Consumes HP equal to 10% of Mortenax Blade's Max HP and deals Fire DMG equal to 90% of Mortenax Blade's Max HP to all enemies, and additionally deals 4 instance(s) of DMG, with each instance dealing Fire DMG equal to 30% of Mortenax Blade's Max HP to one random enemy.
If the current HP is insufficient, Mortenax Blade's current HP will be reduced to 1 when he uses Skill.
While not in the "Infinite Fury" state or when the current HP is 1 or lower, Mortenax Blade cannot use his Skill.
Using Skill does not consume Skill Points.

Lv. 15

Fornax Ex Corpore

Ultimate

Enhance

Inflicts "Balefire Bind" on all enemies. Enemy targets in the "Balefire Bind" state have their DEF reduced by 35% and the DMG they receive increases by 60%, lasting for 2 turn(s). Then, consumes HP equal to 20% of Mortenax Blade's Max HP to deploy a Zone. While the Zone is active, Mortenax Blade enters the "Infinite Fury" state.
During the "Infinite Fury" state, increases CRIT Rate by 20%, increases CRIT DMG by 75%, enhances Basic ATK, unlocks Skill, and gains a new Ultimate "Tenax Per Ignem." When receiving a killing blow, this unit will not be , but will dispel the Zone, exit the "Infinite Fury" state, and restore HP equal to 50% of this unit's Max HP.
When gaining the "Infinite Fury" state, a corresponding countdown appears on the Action Order. The countdown has a fixed SPD of 70. At the start of the countdown's turn, dispels the Zone and exits the "Infinite Fury" state.
If the current HP is insufficient, Mortenax Blade's current HP will be reduced to 1 when he uses this ability.

Downed State

An ally will be incapacitated once their HP is reduced to 0.

Lv. 15

All Karma Comes Due

Talent

Support

While the Zone is active, after each attack an ally target uses on an enemy, inflicts the "Balefire Bind" state on the corresponding enemy target and grants 1 Charge to Mortenax Blade. When Charge reaches 9 points and the current HP is more than 1, consumes 9 Charge, regenerates 30 Energy, and enables Mortenax Blade to use Skill 1 extra time. This extra Skill use is considered as .

Follow-Up ATK

Unleashes an extra attack on the target. This effect is triggered automatically when requirements are met.

Lv. 15

Traces

DMG Boost: Fire+3.2

Lv1

DMG Boost: Fire+6.4

Lv80

Bone, Hardened ad Nauseam

Mortenax Blade can accumulate up to 80 overflow Energy. After using Ultimate, clears it and regenerates a corresponding amount of Energy. When the battle starts or when the Zone is dispelled, if Energy is below 75%, it is immediately regenerated to 75%. When Energy is regenerated to its maximum, dispels all from this unit.

CRIT Rate Boost+2.7

A2

DMG Boost: Fire+3.2

A3

Soul, Tempered ad Mortem

While the Zone is active, 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 corresponding target, and enables Mortenax Blade to gain 1 Charge.

DMG Boost: Fire+4.8

A4

CRIT Rate Boost+4

A5

Heart, Refined ad Infinitum

While the Zone is active, ally targets deal 50% increased DMG. If there are other Nihility characters aside from Mortenax Blade in the team, Ultimate DMG dealt by ally targets increases by 75%. Otherwise, DMG dealt by Mortenax Blade additionally increases by 75%.

HP Boost+6

A6

CRIT Rate Boost+5.3

Lv75

Eidolons

Ere My Death, I Stood Unmade

While the Zone is active, decreases all enemies' All-Type RES by 20%. After using the extra Skill from Talent, the "Infinite Fury" countdown has its by 15%.

Delay Action

Increases the target's waiting interval before the next action.

Ash Was My Heart, Yet the Flame Stayed

When an ally character uses Ultimate to deal DMG, it is considered as having launched . And the DMG dealt by ally targets increases by 75%. The upper limit of Mortenax Blade's Charge decreases to 7.

Follow-Up ATK

Unleashes an extra attack on the target. This effect is triggered automatically when requirements are met.

Across the Shore, Wrath Laid Bare

Ultimate Lv. +2, up to a maximum of Lv. 15.
Talent Lv. +2, up to a maximum of Lv. 15.

Odium I've Smitten, Thence Came the Blade

"Heart, Refined ad Infinitum" additionally increases ally targets' DMG dealt by 50%.

I Severed My Woes, Knowing Death Begets Life

Skill Lv. +2, up to a maximum of Lv. 15.
Basic ATK Lv. +1, up to a maximum of Lv. 10.

If Immortality Could Die, I Swore THEM Slain

As the Zone persists, when Mortenax Blade takes DMG or consumes HP, he gains 1 Charge. This effect can trigger again after any target's turn ends. The DMG multiplier of "Tenax Per Ignem" increases to 150% of its original value.

Stats

HP

1358

atk

ATK

543

def

DEF

485

speed

SPEED

107

Frequently Asked Questions

What is the best Light Cone for Mortenax Blade?

The best Light Cone for Mortenax Blade is Reforged in Hellfire.

What are the best Relics for Mortenax Blade?

The best Relic set for Mortenax Blade is Divine-Querying Master Smith.

What are the best main stats for Mortenax Blade?

The best main stats for Mortenax Blade are Body, Feet, Sphere, and Rope.

What are the best teams for Mortenax Blade?

The best teams for Mortenax Blade include strong synergies with characters that complement their Nihility path and Fire combat type.