Fire
Nihility
Pure Fiction
36,750avg score
21,043 Teams
Mortenax Blade
5FireNihilityStellaron Hunters
ReleasedJun 1, 2026Version 4.3 · Phase 1
Banners1 appearance0 reruns
LatestVersion 4.3Phase 1
View Banner History Signature Light ConeReforged in Hellfire
Currency Wars
- Faction
- Stellaron Hunters
- School
- Bloodflame, Debuff
- Cost
- 2
- Position
- Back
Observed results
Recent Endgame Performance
Avg. endgame scores from observed submissions.Explore Mortenax Blade in Meta Trends
Apocalyptic Shadow
3,585avg score
18,371 Teams
Overview
Mortenax Blade is a powerful Nihility support / sub-DPS who combines massive team amplification with strong HP-scaling damage. Once his Ultimate activates Infinite Fury, he becomes far more aggressive while continuously debuffing enemies.
Role
Amplifier / Sub-DPS
Playstyle
Build toward Ultimate, activate his Zone, then let the team attack frequently to generate Charge. At 9 Charge, Blade automatically launches a free Skill and restores a large amount of Energy.
Why It Works
His Ultimate applies 30% DEF reduction + 50% Vulnerability, while his Zone gives allies another 50% DMG increase. Frequent ally attacks continuously refresh his debuff and accelerate his own Follow-Up attacks.
Watch For
His strongest kit only exists while Infinite Fury is active. He also constantly consumes HP, and his Skill cannot activate at 1 HP, so keeping him healthy matters.
Playstyle
Combat Flow
Build Energy → Ultimate → Infinite Fury → allies attack → build 9 Charge → free Skill/FuA → regain Energy → Enhanced Ultimate → repeat.
Key Notes
Aim for 100% CRIT Rate in combat, 6000+ HP, and around 134+ SPD, with 160+ as a stronger target.
Infinite Fury grants 20% CRIT Rate + 60% CRIT DMG.
If killed during Infinite Fury, he instead survives, heals, and ends the Zone.
Build & Investment
Light Cones
Signature
Reforged in Hellfire
All-purpose signature option that combines first-wave Energy with HP and CRIT-oriented amplification.
F2P
Before the Tutorial Mission Starts
Available from Herta's Store. Its Energy refund requires attacking a DEF-reduced enemy; before Mortenax's first Ultimate, another debuffer may need to supply that condition.
Relics
Primary
Divine-Querying Master Smith
Adds Max HP and CRIT DMG against DEF-reduced enemies. Applying Balefire Bind enables its team damage buff; further attacks allow the effect to trigger again.
Alternative
Longevous Disciple
Adds HP and gains CRIT Rate when Mortenax is hit or has HP consumed; healing alone does not trigger its stacks.
Situational
Eagle of Twilight Line
An action-timing option: Ultimate advances Mortenax by 25%. Its Wind DMG two-piece does not improve his Fire attacks.
Planars
Primary
Bone Collection's Serene Demesne
Personal-damage choice when Mortenax's own output is the priority.
Situational
Sprightly Vonwacq
Setup option when early action and Energy matter more than personal damage.
Main Stats
Body
- CRIT Rate
- AlternativeCRIT DMG
CRIT Rate is still needed after counting Infinite Fury.
The in-combat CRIT Rate target is already covered.
Feet
- SPD
- AlternativeHP%
For more personal actions and faster setup.
A slower personal-damage setup with sufficient action support.
Sphere
- HP%
For HP-scaled damage and durability.
Rope
- Energy Regeneration Rate
- AlternativeHP%
Ultimate cadence is the priority.
Energy cadence is already sufficient.
Recommended Substats
- CRIT Rate
- CRIT DMG
- SPD
- HP%
For personal damage, balance CRIT after Infinite Fury's bonuses, then tune SPD and add HP. A support setup can prioritize SPD first. Effect Hit Rate is a Light Cone requirement when using chance-based debuffs, not a requirement for his native Balefire Bind.
Eidolon Investment
E0 already supplies Balefire Bind and the attack-fed Zone loop. Establish reliable healing and Zone access first; E1 extends its uptime, while E2 changes how allied damaging Ultimates interact with follow-up effects.
Reforged in Hellfire adds HP and fixed Energy on the first wearer turn of each wave. Skill attacks apply Purgatory, increasing received CRIT DMG with an extra benefit for Mortenax's own attacks.
E1
While the Zone lasts, reduces all enemies' All-Type RES by 20%. Each extra Skill from his Talent delays the Infinite Fury countdown by 15%.
E2
Ally characters' damaging Ultimates count as follow-up attacks, allied follow-up damage increases by 75%, and his Charge requirement falls to seven.
E6
During the Zone, taking damage or consuming HP grants one Charge, with the trigger resetting after any target's turn ends. Tenax Per Ignem deals 150% of its original damage.
Teams
Recommended Teammates
Acheron
Repeated debuffs and Ultimate amplification align with Acheron's damage plan.
Ashveil
His frequent attacks accelerate his Charge loop while both contribute follow-up pressure.
Tribbie
Her follow-ups feed his Charge, while his repeated AoE attacks help charge her Ultimate.
Hyacine
Adds Max HP and contributes frequent attacks from the sustain slot.
70,940 observed teams36 recent contexts
Most Played With
Skills
Basic ATK
A Broken Blade Still Slays
Single AttackLv. 6
Deals Fire DMG equal to 50% of Mortenax Blade's Max HP to one designated enemy, and causes the target to enter the Taunt state for 1 turn.
Basic ATK sequence
A Tempered Blade Severs Souls
Single AttackLv. 6
Deals Fire DMG equal to 100% of Mortenax Blade's Max HP to one designated enemy, and causes the target to enter the Taunt state for 1 turn.
Skill
A Rain of Blades Seals Fate
AoE AttackLv. 10
Consumes HP equal to 10.0% of Mortenax Blade's Max HP and deals Fire DMG equal to 72% 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 24.0% 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.
Skill sequence
A Rain of Blades Seals Fate
AoE AttackLv. 10
Ultimate
Fornax Ex Corpore
EnhanceLv. 10
Inflicts "Balefire Bind" on all enemies. Enemy targets in the "Balefire Bind" state have their DEF reduced by 30.0% and the DMG they receive increases by 50.0%, 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 60.0%, enhances Basic ATK, unlocks Skill, and gains a new Ultimate "Tenax Per Ignem." When receiving a killing blow, this unit will not be knocked down, 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.
Ultimate sequence
Tenax Per Ignem
AoE AttackLv. 10
Deals Fire DMG equal to 350.0% of Mortenax Blade's Max HP to all enemies.
Talent
All Karma Comes Due
SupportLv. 10
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 25.0 Energy, and enables Mortenax Blade to use Skill 1 extra time. This extra Skill use is considered as Follow-Up ATK.
Technique
Blade's Reach Spares None
Maze AttackLv. 1
Immediately attacks all enemies within a certain range. After entering combat, inflicts the Taunt state on all enemies for 1 turn and decreases DMG taken by this unit by 90% for 2 turn(s).
Traces
Major Traces
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 debuffs from this unit.
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.
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%.
Minor Traces
- CRIT Rate Boost+12%
- DMG Boost: Fire+22.4%
- HP Boost+10%
Eidolons
E1
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 action delayed by 15%.
E2
Ash Was My Heart, Yet the Flame Stayed
When an ally character uses Ultimate to deal DMG, it is considered as having launched Follow-Up ATK. And the Follow-Up ATK DMG dealt by ally targets increases by 75%. The upper limit of Mortenax Blade's Charge decreases to 7.
E3
Across the Shore, Wrath Laid Bare
- Ultimate +2
- Talent +2
Ultimate Lv. +2, up to a maximum of Lv. 15.
Talent Lv. +2, up to a maximum of Lv. 15.
E4
Odium I've Smitten, Thence Came the Blade
"Heart, Refined ad Infinitum" additionally increases ally targets' DMG dealt by 50%.
E5
I Severed My Woes, Knowing Death Begets Life
- Basic ATK +1
- Skill +2
Skill Lv. +2, up to a maximum of Lv. 15.
Basic ATK Lv. +1, up to a maximum of Lv. 10.
E6
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
Level 80
Maximum ascension
| Level | HP | ATK | DEF | SPD |
|---|---|---|---|---|
| 1 | 185 | 74 | 66 | 107 |
| 20 | 434 | 174 | 155 | 107 |
| 30 | 601 | 240 | 215 | 107 |
| 40 | 767 | 307 | 274 | 107 |
| 50 | 933 | 373 | 333 | 107 |
| 60 | 1100 | 440 | 393 | 107 |
| 70 | 1266 | 506 | 452 | 107 |
| 80 | 1358 | 543 | 485 | 107 |
HP
ATK
DEF
SPD