MementoMori

How to Beat 【The Witch of Rust】A.A.

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MementoMori's 【The Witch of Rust】A.A. is one of the witches players will frequently encounter across the game. Read on to learn how to make use of the game's witches and mechanics to defeat them in battle.

【The Witch of Rust】A.A.A.A. Icon
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Story and Profile

How to Beat 【The Witch of Rust】A.A.

How to Beat 【The Witch of Rust】A.A. Overview

【The Witch of Rust】A.A.
PvE Rank PvP Rank
MementoMori - B Icon
MementoMori - S Icon
Base Rarity Soul Type Role
SR (Limited) MementoMori - Chaos Icon Chaos MementoMori - Sorcerer Icon Sorcerer Attacker

A powerful attacker that sustains herself through battle by being nigh-invulnerable in the first two turns of the battle while dealing heavy blows to the enemy team even with just her basic attacks. Failing to take her out within the early phase of a battle may spell doom for your entire team.

【The Witch of Rust】A.A. Strengths and Weaknesses

Strengths Weaknesses
• Heals herself continuously during a fight with her second skill.
• Heavy-hitting magic attacks due to her first passive, with each basic attack dealing damage equivalent to up to 220% of her MAG stat.
• Attacks against her up to the second turn are up to 55% weaker because of the damage cut from her second passive skill.
• Can be countered by one of the weakest units in the game
• Very vulnerable to Faint and other mobility-restricting buffs

【The Witch of Rust】A.A. Skill Analysis

Memento Mori - Severing Rust Icon
Severing Rust
Memento Mori - Limiter Release Icon
Limiter Release
Memento Mori - The Perfect Specimen Icon
The Perfect Specimen

Skill Skill Effect
Memento Mori - Severing Rust Icon
Severing Rust
Level 1 (Unlocks by default)
Deals 3 magical attacks equal to 520% of her ATK to enemies at random.
Level 2 (Unlocks by level 81)
The magical attacks’ damage becomes equal to 710% of her ATK.
Level 3 (Unlocks by level 161)
The number of magical attacks becomes 4.
Skill Skill Effect
Memento Mori - Limiter Release Icon
Limiter Release
Level 1 (Unlocks by level 11)
Deals 1 direct attack equal to 200% of her MAG to 4 random enemies, and restores HP equal to 15% of this skill’s total damage to A.A.
Level 2 (Unlocks by level 21)
The direct attack’s damage becomes equal to 300% of her MAG.
Level 3 (Unlocks by level 101)
The amount her HP is restored by becomes equal to 20% of this skill’s total damage.
Level 4 (Unlocks by level 181)
The direct attack’s damage becomes equal to 420% of her MAG.
Skill Skill Effect
Memento Mori - The Perfect Specimen Icon
The Perfect Specimen
Level 1 (Unlocks by level 41)
A.A. strengthens her basic attack. When she deals a basic attack, she instead deals 1 direct attack equal to 150% of her MAG to 1 random enemy.
Level 2 (Unlocks by level 121)
The direct attack’s damage becomes equal to 180% of her MAG.
Level 3 (Unlocks by level 201)
The direct attack’s damage becomes equal to 220% of her MAG.

A.A. is characterized by three things: Her highly damaging active skills, her ability to heal herself with her second active skill, and her buffed-up basic attacks that scale off her MAG stat. As long as she's alive, she'll be a huge threat to your party because she can easily take out glass cannon witches (like Cordie) and others.

Memento Mori - Angel of Love Icon
Angel of Love

Skill Skill Effect
Memento Mori - Angel of Love Icon
Angel of Love
Level 1 (Unlocks by level 61)
When A.A. is attacked, the attack’s damage is cut by 25%. This skill is activated until the end of the 1st turn.
Level 2 (Unlocks by level 141)
This skill becomes activated until the end of the 2nd turn.
Level 3 (Unlocks by level 221)
The damage from the enemy’s attack is cut by 55%.

The biggest threat A.A. poses to any enemy, however, is how she can cut the damage she receives up to 85% for the first two turns of the battle. While your team tries to take her out, their attacks won't do anything to her, while she takes them out in short order.

Witches to Beat 【The Witch of Rust】A.A.

【The Witch of Rust】A.A. Hard Counters

MementoMori - Illya IconIllya

Though she's applicable mostly in PvE, Illya's R rarity form can counter A.A. because of her active skill - which inflicts a 2-turn Faint on any enemy it hits. Within the duration, A.A. wouldn't be able to attack even while she receives scratch damage.

Once the Faint expires, A.A. becomes much easier to kill though she's still a threat to your team with her skills. So make sure to take her out ASAP.

MementoMori - Mimi IconMimi

Mimi could potentially be a good counter to A.A. because of how she can undermine the latter's defenses with her Resonance ability - which inflicts damage on the enemy witch with the highest DEF once the enemy witch with the lowest DEF gets attacked.

MementoMori - Amleth IconAmleth

Amleth is another potential counter to A.A. as long as her Immortality buff isn't dispelled or stolen. Timing will also be a factor since her Immortality buff lasts 3 turns while A.A.'s damage cut lasts 2 turns. 1 turn may not be enough for Amleth to take the witch down.

【The Witch of Rust】A.A. General Counters

MementoMori - Soltina IconSoltina MementoMori - Nina IconNina MementoMori - Lea IconLea
MementoMori - Illya IconIllya MementoMori - Armstrong IconArmstrong MementoMori - Richesse IconRichesse
MementoMori - Sivi IconSivi MementoMori - Florence IconFlorence MementoMori - Fia IconFia

【The Witch of Rust】A.A. Sample Counter Teams

PvE A.A. Counter Team

Attacker Tank Buffer Attacker Buffer
MementoMori - Illya IconIllya MementoMori - Soltina IconSoltina MementoMori - Dian IconDian MementoMori - Florence IconFlorence MementoMori - Merlyn IconMerlyn

In PvE, position Illya to wherever A.A. is. Florence will take her out with her attack, supported by Merlyn. Soltina meanwhile tanks any potential attacks, while Dian provides Evasion support for Florence.

Witches Not To Use Against 【The Witch of Rust】A.A.

MementoMori - Cordie IconCordie MementoMori - Florence IconFlorence

Though using them is fine in PvE, in PvP Cordie and Florence would be too soft to withstand A.A.'s attacks unless they have a supporting unit that gives them shields. However, you're better off fielding witches that are hardier while tough to kill as well.

MementoMori - Sabrina IconSabrina

Sabrina is another example of a witch that would be incapable of dealing with A.A. because the latter can still be deadly even with debuffed SPD while withstanding anything but the most severe damage for two turns.

MementoMori - Rusalka IconRusalka

Rusalka may be a powerful unit who can beat A.A. though she'll need support. Even with her own shield abilities, don't put her up against A.A. unless you have other units who can take the heat for her.

Tips for Beating 【The Witch of Rust】A.A.

Inflict Faint on Her ASAP

The first thing you need to remember when fighting A.A. is that she is nigh-invulnerable for the first two turns of the battle, so deny her the use of those two turns by inflicting Faint on her from the get-go. Once the Faint is expired, she'll be much easier to defeat.

Bring Tanky, Heavy-Hitting Units

Once A.A.'s damage cut is gone, you'll need units that can kill her fast but are still capable of lasting through her damage. Fia is a good example of this because of how tanky she can get.

Bring Units That Cast Multi-Barriers, Shields

If you have to, bring units that can give shields to help protect your units like Richesse, though you may be better off bringing more units that can maximize the damage of your main attackers instead.

MementoMori Related Guides

Garmr - MementoMori

List of All Character Builds List of All Character Profiles
List of All How to Beat Articles

Character Build Lists

Character Builds by Rarity
SR Characters R Characters
N Characters
Character Builds by Soul
Azure Characters Crimson Characters
Amber Characters Emerald Characters
Radiance Characters Chaos Characters
Character Builds by Type
Warrior Type Sniper Type
Sorcerer Type

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

Eureka - MementoMoriEureka Liselotte - MementoMoriLiselotte Matilda - MementoMoriMatilda
Yuni - MementoMoriYuni Paladea - MementoMoriPaladea Eir - MementoMoriEir
Morgana - MementoMoriMorgana Apostle Rosalie - MementoMoriApostle Rosalie Asahi - MementoMoriAsahi
Alexandra - MementoMoriAlexandra Minasumari - MementoMoriMinasumari Kaguya - MementoMoriKaguya
Summer Nina - MementoMoriSummer Nina Summer Amleth - MementoMoriSummer Amleth Milla - MementoMoriMilla
Aine - MementoMoriAine Serruria - MementoMoriSerruria Tama - MementoMoriTama
Meria - MementoMoriMeria Festive Natasha - MementoMoriFestive Natasha Sonya - MementoMoriSonya
Gil’uial - MementoMoriGil’uial Winter Tropon - MementoMoriWinter Tropon Fenny - MementoMoriFenny
Stella - MementoMoriStella Sivi - MementoMoriSivi Belle - MementoMoriBelle
Summer Cordie - MementoMoriSummer Cordie Priscilla - MementoMoriPriscilla Artie - MementoMoriArtie
Chiffon - MementoMoriChiffon Luke - MementoMoriLuke Summer Sabrina - MementoMoriSummer Sabrina
Fia - MementoMoriFia Sophia - MementoMoriSophia Lea - MementoMoriLea
Claudia - MementoMoriClaudia Tainted Iris - MementoMoriTainted Iris Summer Moddey - MementoMoriSummer Moddey
Richesse - MementoMoriRichesse Carol - MementoMoriCarol Winter Amour - MementoMoriWinter Amour
Veela - MementoMoriVeela Fortina - MementoMoriFortina Cerberus - MementoMoriCerberus
Elfriede - MementoMoriElfriede Rusalka - MementoMoriRusalka Armstrong - MementoMoriArmstrong
Witch Illya - MementoMoriWitch Illya Ophelia - MementoMoriOphelia A.A. - MementoMoriA.A.
Valeriede - MementoMoriValeriede

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