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MementoMori

Eirene Builds: Best Runes and Team Comps

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★ Mihri: Builds | Profile || Liebe: Builds | Profile
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★ Top Builds: Cordie | Florence | Merlyn | Fia | Lumica

Eirene is a Radiance Soul Sniper-type SR (Limited) Rarity Witch in MementoMori. Learn more about this Witch's basic info, skills, arcana, and which gacha you can find her in!

EireneEirene Icon
Best Builds How To Beat
Story and Profile Should You Pull for Eirene

List of Contents

Eirene Basic Info

Eirene Overview

Eirene
MementoMori - Eirene Icon
PvE Rank PvP Rank
MementoMori - S Icon MementoMori - B Icon
Base Rarity Soul Type Role
SR (Limited) MementoMori - Radiance Icon Radiance MementoMori - Sniper Icon Sniper Debuffer

Eirene Analysis

Debuffer for PvE and Secondary DPS

Memento Mori - Weathered Shot Icon
Weathered Shot 		Memento Mori - Astrum Icon
Astrum

Skill Skill Effect
Memento Mori - Weathered Shot Icon
Weathered Shot 		Level 1 (Unlocks by default)
Eirene deals 1 physical attack equal to 180% of her ATK to 4 random enemies.
Level 2 (Unlocks by level 81)
Additionally, before dealing the physical attack, decreases all targets’ DEF by 25% for 4 turns. If this skill is used in Auto-Battles or Boss Battles, ［Decreased DEF］ becomes unable to be dispelled. If this skill is used in the Tower of Infinity, the amount all targets’ DEF decreases by becomes 50%.
Level 3 (Unlocks by level 161)
The physical attack’s damage becomes equal to 260% of her ATK.
Skill Skill Effect
Memento Mori - Astrum Icon
Astrum 		Level 1 (Unlocks by level 11)
Deals 4 physical attacks equal to 280% of her ATK to enemies at random. If this skill is used for the 3rd time and onward during battle, Astrum Natalis activates instead of Astrum. Astrum Natalis deals 6 physical attacks equal to 560% of Eirene’s ATK to the enemy with the highest ATK.
Level 2 (Unlocks by level 21)
Strengthens Astrum Natalis. Additionally, before dealing the initial physical attack, increases her chance to hit by 50% for 1 turn.
Level 3 (Unlocks by level 101)
Strengthens Astrum Natalis. The number of physical attacks becomes 8.
Level 4 (Unlocks by level 181)
Astrum’s physical attacks’ damage becomes equal to 380% of Eirene’s ATK. Astrum Natalis’s physical attacks’ damage becomes equal to 760% of Eirene’s ATK.

Eirene is, first and foremost, a general-use debuffer in PvE and and secondary DPS. If you intend to use her as a debuffer (DEF shred), she's good to have at one copy. But if you want to use her as a sub DPS, then you will have to get multiple copies of her.

If you have her in your team while clearing the main quest, Eirene's first skill Weathered Shot will debuff the DEF of 4 (5, if you have her Unique Weapon) enemies by 25%. If you are using her in the Tower of Infinity, this DEF shred rises to 50%, making the enemy team that much easier to take down.

We recommend getting only one copy of her for a PvE team (specifically the Main Quest and Tower of Infinity modes) since Radiance witches are generally hard to come by and there are other witches within this soul class (like Rusalka) that should be invested in first.

Skill Accelerator and Protector

Memento Mori - Contract of the Night Icon
Contract of the Night 		Memento Mori - I’m Cheering You On! Icon
I’m Cheering You On!

Skill Skill Effect
Memento Mori - Contract of the Night Icon
Contract of the Night 		Level 1 (Unlocks by level 41)
At the start of the turn, Eirene strengthens her basic attack for 3 turns. When she deals a basic attack, this skill decreases her skill cooldown time by 1, and dispels 1 debuff from her. Afterwards, this skill’s ［Strengthened Basic Attack］ is dispelled. This skill will not activate again until 3 action phases have ended since its previous activation.
Level 2 (Unlocks by level 121)
The number of debuffs that are dispelled when she deals a strengthened basic attack becomes 2.
Level 3 (Unlocks by level 201)
The targets of ［Strengthened Basic Attack］ become Eirene and the ally with the lowest SPD.
Skill Skill Effect
Memento Mori - I’m Cheering You On! Icon
I’m Cheering You On! 		Level 1 (Unlocks by level 61)
When Eirene is attacked, the attack’s damage is cut by 30%.
Level 2 (Unlocks by level 141)
Additionally, at the start of the turn, grants ［Force Field］ to the ally with the lowest SPD other than Eirene for 4 turns (cannot be dispelled). When an enhanced target of ［Force Field］ is attacked, the attack’s damage is cut by 30%. The effect that grants ［Force Field］ will not activate again until 4 action phases have ended since its previous activation.
Level 3 (Unlocks by level 221)
When Eirene is attacked, the amount her damage from the enemy’s attack is cut by becomes 70%.

If you are running a slow team (usually your DPS carry is the slowest member of your team but still faster than the rest of the enemy team), Eirene has two other benefits: her first passive, Contract of the Night, strenghens her and the ally with the lowest SPD's basic attack. Whenever they make a basic attack, they will decrease their skill cooldown time by 1 and dispel up to 2 debuffs from themselves. This allows your DPS carry to use their high-damage active skills more often in battle.

Eirene's second skill, I'm Cheering You On! also has benefits for a slow team. This passive grants the ally with the lowest SPD other than Eirene a Force Field for 4 turns. This force field cuts the damage from an enemy's attack by 30%, keeping them safe from damage.

Eirene Best Runes

PVE
Offensive Runes
PVE
Defensive Runes
Recommended Runes
DEX Rune ImageDEX Rune ATK Rune ImageATK Rune Debuff ACC Rune ImageDebuff ACC Rune
Recommended Runes
STA Rune ImageSTA Rune HP Rune ImageHP Rune CRIT RES Rune ImageCRIT RES Rune Debuff RES Rune ImageDebuff RES Rune

Eirene Best Team Comps

PvE Team (Main Quest/Tower of Infinity)

DPS Support Support Support Support
MementoMori - Florence IconFlorence
or
MementoMori - Fia IconFia 		MementoMori - Merlyn IconMerlyn MementoMori - Sivi IconSivi
or
MementoMori - Mimi IconMimi 		MementoMori - Primavera IconPrimavera MementoMori - Eirene IconEirene

Due to the nature of her debuff, Eirene is rather universal with the only caveat being that the character she's supposed to support should be a rather slow unit like Florence if you're starting out, or Fia if you've already invested heavily into her (at least up to LR rarity).

Sivi could also end up getting Eirene's buffs, so you may want to make sure Sivi can act as a secondary DPS on top of being a buffer.

Eirene Skills and Stats

Weathered Shot

Skill Type Cooldown
Image File
Weathered Shot		 Active
4
Skill Effect
Level 1 (Unlocks by default)
“Leave this to your instructor!” Using her well-worn, beloved pistol, Carousel Cane, Eirene deals 1 physical attack equal to 180% of her ATK to 4 random enemies.
Level 2 (Unlocks by level 81)
Additionally, before dealing the physical attack, decreases all targets’ DEF by 25% for 4 turns. If this skill is used in Auto-Battles or Boss Battles, ［Decreased DEF］ becomes unable to be dispelled. If this skill is used in the Tower of Infinity, the amount all targets’ DEF decreases by becomes 50%.
Level 3 (Unlocks by level 161)
The physical attack’s damage becomes equal to 260% of her ATK.

Astrum

Skill Type Cooldown
Image File
Astrum		 Active
4
Skill Effect
Level 1 (Unlocks by level 11)
“An instructor’s gotta show off sometimes!” When Eirene pulls the trigger after channeling her greatest wish, she turns her bullets into shooting stars that pierce the heavens above. Deals 4 physical attacks equal to 280% of her ATK to enemies at random. If this skill is used for the 3rd time and onward during battle, Astrum Natalis activates instead of Astrum. Astrum Natalis deals 6 physical attacks equal to 560% of Eirene’s ATK to the enemy with the highest ATK.
Level 2 (Unlocks by level 21)
Strengthens Astrum Natalis. Additionally, before dealing the initial physical attack, increases her chance to hit by 50% for 1 turn.
Level 3 (Unlocks by level 101)
Strengthens Astrum Natalis. The number of physical attacks becomes 8.
Level 4 (Unlocks by level 181)
Astrum’s physical attacks’ damage becomes equal to 380% of Eirene’s ATK. Astrum Natalis’s physical attacks’ damage becomes equal to 760% of Eirene’s ATK.

Contract of the Night

Skill Type Cooldown
Image File
Contract of the Night		 Passive
Skill Effect
Level 1 (Unlocks by level 41)
In order to protect her beloved pupils, Eirene wished for power that could change fate. But, that wish came true in the cruelest way imaginable. At the start of the turn, Eirene strengthens her basic attack for 3 turns. When she deals a basic attack, this skill decreases her skill cooldown time by 1, and dispels 1 debuff from her. Afterwards, this skill’s ［Strengthened Basic Attack］ is dispelled. This skill will not activate again until 3 action phases have ended since its previous activation.
Level 2 (Unlocks by level 121)
The number of debuffs that are dispelled when she deals a strengthened basic attack becomes 2.
Level 3 (Unlocks by level 201)
The targets of ［Strengthened Basic Attack］ become Eirene and the ally with the lowest SPD.

I’m Cheering You On!

Skill Type Cooldown
Image File
I’m Cheering You On!		 Passive
Skill Effect
Level 1 (Unlocks by level 61)
“I just can’t get enough of seeing everyone working their hardest!” When Eirene is attacked, the attack’s damage is cut by 30%.
Level 2 (Unlocks by level 141)
Additionally, at the start of the turn, grants ［Force Field］ to the ally with the lowest SPD other than Eirene for 4 turns (cannot be dispelled). When an enhanced target of ［Force Field］ is attacked, the attack’s damage is cut by 30%. The effect that grants ［Force Field］ will not activate again until 4 action phases have ended since its previous activation.
Level 3 (Unlocks by level 221)
When Eirene is attacked, the amount her damage from the enemy’s attack is cut by becomes 70%.

Eirene Stats and Potential

Max Stats (Lv. 240)

HP 4,987,160
DEF 10
DEF Break 0
SPD 3,148
PM. DEF Break 0
P. DEF 598,459
M. DEF 591,334
ACC 299,229
EVD 341,976
CRIT 341,976
CRIT RES 249,358
CRT DMG Boost 0
P. CRIT DMG Cut 0
M. CRIT DMG Cut 0
Debuff ACC 0
Debuff RES 0
Counter 0
HP Drain 0

Max Potential (Lv. 240)

STR 598,459
MAG 591,334
DEX 683,953
STA 498,716

Eirene Exclusive Weapon

Carousel Cane - MementoMori.jpg
Carousel Cane
Level 1 (Unlocked by getting Eirene's unique weapon)
Strengthens Weathered Shot. The targets of this skill become 5 random enemies.
Level 2 (Unlocks at UR rarity)
Strengthens I’m Cheering You On! The amount ［Force Field］ cuts the damage from the enemy’s attack by becomes 45%.
Level 3 (Unlocks at LR rarity)
Strengthens Weathered Shot. The physical attack’s damage becomes equal to 280% of her ATK.

Eirene Available Gachas

Eirene Invoke Banners

List of Gacha Banners
MementoMori - Prayer of The Fleeting
Prayer of The Fleeting
 		MementoMori - Invocation of Chance
Invocation of Chance

Eirene Arcana

Sextans's Instruction

MementoMori - Eirene IconEirene MementoMori - Illya IconIllya

MementoMori Related Guides

All SR Rarity Character Builds

Soltina - MementoMoriSoltina Amleth - MementoMoriAmleth Fenrir - MementoMoriFenrir Florence - MementoMoriFlorence
Moddey - MementoMoriModdey Sabrina - MementoMoriSabrina Freesia - MementoMoriFreesia Amour - MementoMoriAmour
Rean - MementoMoriRean Dian - MementoMoriDian Ivy - MementoMoriIvy Merlyn - MementoMoriMerlyn
Cordie - MementoMoriCordie Nina - MementoMoriNina Mertillier - MementoMoriMertillier Mimi - MementoMoriMimi
Tropon - MementoMoriTropon Hathor - MementoMoriHathor Olivia - MementoMoriOlivia Primavera - MementoMoriPrimavera
Natasha - MementoMoriNatasha Lunalynn - MementoMoriLunalynn

All SR (Limited) Rarity Character Builds

Sage Merlyn - MementoMoriSage Merlyn Tillie - MementoMoriTillie Asahi - MementoMoriAsahi Artoria - MementoMoriArtoria
Eirene - MementoMoriEirene Winter Lunalynn - MementoMoriWinter Lunalynn Winter Soltina - MementoMoriWinter Soltina Eureka - MementoMoriEureka
Festive Natasha - MementoMoriFestive Natasha Meria - MementoMoriMeria Tama - MementoMoriTama Serruria - MementoMoriSerruria
Aine - MementoMoriAine Milla - MementoMoriMilla Summer Amleth - MementoMoriSummer Amleth Summer Nina - MementoMoriSummer Nina
Kaguya - MementoMoriKaguya Minasumari - MementoMoriMinasumari Alexandra - MementoMoriAlexandra Apostle Rosalie - MementoMoriApostle Rosalie
Lumica - MementoMoriLumica Ayse - MementoMoriAyse Treasured Cerberus - MementoMoriTreasured Cerberus Treasured Fenrir - MementoMoriTreasured Fenrir
Liebe - MementoMoriLiebe Mihri - MementoMoriMihri Carmilla - MementoMoriCarmilla Yildiz - MementoMoriYildiz
Ringmaster Cordie - MementoMoriRingmaster Cordie Nebra - MementoMoriNebra Spring Shizu - MementoMoriSpring Shizu Flack - MementoMoriFlack
Moineau - MementoMoriMoineau Lucille - MementoMoriLucille Uniform A.A. - MementoMoriUniform A.A. D.D. - MementoMoriD.D.
Potpourri - MementoMoriPotpourri Pola - MementoMoriPola Rustica - MementoMoriRustica Morgana - MementoMoriMorgana
Eir - MementoMoriEir Paladea - MementoMoriPaladea Yuni - MementoMoriYuni Matilda - MementoMoriMatilda
Liselotte - MementoMoriLiselotte Fenny - MementoMoriFenny Gil’uial - MementoMoriGil’uial Winter Tropon - MementoMoriWinter Tropon
Sonya - MementoMoriSonya Stella - MementoMoriStella Sivi - MementoMoriSivi Summer Cordie - MementoMoriSummer Cordie
Priscilla - MementoMoriPriscilla Artie - MementoMoriArtie Chiffon - MementoMoriChiffon Belle - MementoMoriBelle
Luke - MementoMoriLuke Claudia - MementoMoriClaudia Summer Sabrina - MementoMoriSummer Sabrina Fia - MementoMoriFia
Lea - MementoMoriLea Sophia - MementoMoriSophia Carol - MementoMoriCarol Veela - MementoMoriVeela
Winter Amour - MementoMoriWinter Amour Tainted Iris - MementoMoriTainted Iris Richesse - MementoMoriRichesse Summer Moddey - MementoMoriSummer Moddey
Fortina - MementoMoriFortina Elfriede - MementoMoriElfriede Rusalka - MementoMoriRusalka Cerberus - MementoMoriCerberus
Armstrong - MementoMoriArmstrong Ophelia - MementoMoriOphelia A.A. - MementoMoriA.A. Valeriede - MementoMoriValeriede
Witch Illya - MementoMoriWitch Illya

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