Skirnir Decimates!

Boss Information

Name Mechanistaff Skirnir
Boss Position Magic
Boss Race Human
Boss Gender Male
Boss Hidden Traits Grounded
Action Skill Pos Ekrixis
160% Light MATK damage & Holychain for 3 turns to 2 farthest enemies & 3 farthest enemies. All stats excluding HP 30% up for 3 turns to self. *Holychain affects only Aesir, Elves *Ignores Shields
Auto Skill Light MATK damage & Holychain, Corrupt for 3 turns & Remove Barrier to all enemies.
*Holychain effect applies only to Aesir, Jotun, Beasts
*Corrupt, Remove Barrier applies to all races

Passive Skill 1 -- Holy drive field & Magnetic Field to all enemies
Passive Skill 2 -- Holy drive field & Holy drive support 20% up to self
Boss's Attack Element Light
Effective Elements Against Boss Earth, Dark
Effects to look out for Holychain, Corrupt, Holy Drive Field, Magnetic Field, Holy Drive Support, Light Wound, Shield, Frenzy, Stoneskin, Berserk, Quick
Heaviest Damage to Farthest 3, Farthest 2
Targeted Races Aesir, Jotun, Beast


Fire 120/200
Water 100/200
Earth 90/200
Light 150/200
Dark 40/200
What does this mean?Resists are on a scale from 0 to 200.
100 indicates that the hero does not take increased or decreased damage from an element.
Greater than 100 values indicates that hero takes less damage from an element.
Less than 100 values indicates that the hero takes more damage from an element.

Other Enemies' Information

Automata (Light) (Magic)
Light MATK damage & Light Wound for 3 turns to all enemies. Light MATK counterattack for 3 turns to Skirnir
*Light Wound effect applies to all races

Characteristic -- Nullifies damage, but susceptible to Shadowbound, Shade, Petrify

Fire Water Earth Light Dark
180 180 180 200 0

Automata (Light) (Ranged)
Frenzy, Stoneskin, Berserk, Quick for 3 turns to Skirnir

Characteristic -- Nullifies damage, but susceptible to Shadowbound, Shade, Petrify
Fire Water Earth Light Dark
180 180 180 200 0

Hero Usage Rankings

Hero Usage Rankings over Time

Farmable Gear



Sakuu's picture



Who cares about tiktok

Omega's picture

Zero disrespect meant. But seriously? You post spam on a gaming wiki about tik tok? Kinda dumb if you ask me. Anyone have anything worthwhile to add as a comment to the Skirnir Decimates page? Maybe someone can post the strategy behind the Luflit/Envy strategy. Already got mine to 6* but something like that might actually be helpful for players looking for information on Skirnir. Not useless and unimportant Tik Tok. End rant.

Old Cheese...

Edison's picture

For the cheese Envy/Luflit strategy (A lot on Youtube...), the main idea is to use Envy, Lufflit and healers, just using Skirnir's attacks to hit himself from Envy and Lufflit skills +Reflect Barriers. Using high flat hp gear and healers help keep the team alive and do more damage from reflect barrier (I believe...) while glacial cloaks help apply reflect barrier. (Also bringing low defensive stats to maximize the damage on reflect) Use Envy/Lufflit skills on his action skill, from what I remember, there's a certain rythm that he does his action skill, maybe 3 auto attacks before action skill...? It could vary sometimes though.  


Dx2-Suta's picture

Actually, it's 2 auto skills.

It's not one number. Boss

xKiv's picture

It's not one number. Boss action skill depends on boss skill gauge which depends on how hard you hit him, which is somewhat random. So it starts as 2 and continues to be mostly 2, but sometimes it will be 3 ... but in the third bar it will noticeably often be 1 (I am not sure if I have ever seen two actives in a row without any auto in between). (that's all for reflect strat, where him hitting you harder means him hitting himself harder, and therefore hitting you more often, and therefore hitting himself more often, vicious cycle repeat)


Omega's picture

Im told nagisa demolishes skirnir. Dont have her yet and not 100% sure why shes so powerful against him.

S4 Manual Setup

Karyo's picture

There are two strategies:

(1) Using Reflection, which requires Esquire, Luflit and I think 3 healers.
(2) Keep automatas locked down and attack the boss normally, which requires heroes that have Shadowbound/Shade/Petrify.

I initially tried the reflection strategy, but could not do enough damage so had to switch to damaging the boss the normal way. My group setup is as follows:


Snake Blade Dinna

  • Schwartztrauer, Blades of Betrayal, Seal-Wing, Raven Harpe
  • Immortal Ring, Eye of Ruin, Pen Pen Earrings, Executioner's Band
  • Raging Shade Gauntlet

Greed Scion Curtana

  • Greed Blade (Sp), Yggdrasil Blade, Greed Blade X (Sp), New Year Katana
  • Kvasir's Blood Chalice, Misato's Sunglasses, Bracelet of Conflict, Rainbow Pendant
  • Raging Shade Gauntlet

Flower Mage Rapunzel

  • Chance Baton, Saitama's Hero Cape, Race Flag, Hellish Blizzard's Coat
  • Dragon Band, Genie Lamp, Crescent Necklace, Star Pendant
  • Raging Shade Boots

Dark Beast Tamer Luce

  • Poisonous Rose, Dark Spiral, Yggdrasil Bow, Valhalla Bow
  • Dragon Band, Bangle of Faith, Rainbow Pendant, Ring of Niflung
  • Raging Shade Gauntlet

Envy Scion Esquire

  • Tomb Keeper's Shovel, Book of Zeref, N2 Missile, Perfume Rifle
  • Dragon Band, Ring of Conflict, Schwarze Halskette, Bangle of Wisdom
  • Raging Shade Gauntlet

I initially equipped my heroes with gauge-up weapons but could not do enough damage that way, so had to replace them with dark element weapons.


As a general rule you use Action Skills of heroes as soon as they become available except when Skirnir's health bar is about to run out (you want to save them for the next health bar). The only exception is Esquire's AS which you should use when Skirnir's about to use his AS. Make sure you turn off Action Skill Animations in Settings, so your heroes' action skill animation does not make it hard to see when Skirnir is using his. When Skirnir is about to use his AS, the camera will zoom in and you will see a circle of light around him.

Save Limit Burst and use it only when Skirnir is about to use his AS and Esquire's AS is not available yet. This will interrupt Skirnir and should give just enough time for Esquire's AS to be available.

Good luck!!

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