MementoMori's Dian 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.

Dian
Best Builds	How To Beat
Story and Profile

How to Beat Dian

How to Beat Dian Overview

Dian
PvE Rank	PvP Rank

Base Rarity	Soul	Type	Role
SR	Crimson	Sniper	Buffer

Dian is a well-rounded character who strongly emphasizes damage output and survivability. Her skills offer flexibility and adaptability to different battle situations. Her Piercing Shot is a reliable damage source, while Cursed Bullet provides a powerful burst option. Her Heart of Servitude enhances team survivability, and Servant's Expertise offers a solid defensive countermeasure.

Dian Strengths and Weaknesses

Dian Skill Analysis

Piercing Shot

Cursed Bullet

Skill Effects Summarized

Skill	Skill Effect
Piercing Shot	Level 1 (Unlocks by default) Deals 1 physical attack equal to 380% of her ATK to 3 random enemies, and inflicts ［Bleed］on all targets for 3 turns. Each turn, at the start of the action phase, ［Bleed］deals damage equal to 25% of Dian’s ATK.
	Level 2 (Unlocks by level 81) The physical attack’s damage becomes equal to 410% of her ATK.
	Level 3 (Unlocks by level 161) Additionally grants［Regeneration］to her for 3 turns. Each turn, at the start of the action phase,［Regeneration］restores HP equal to 5% of Dian’s max HP to her.

Skill	Skill Effect
Cursed Bullet	Level 1 (Unlocks by level 11) Activates when her remaining HP percentage is 40% or higher. Dian deals damage equal to 35% of her max HP to herself, and deals 1 direct attack equal to 60% of the depleted HP to 2 random enemies. If Dian does not fulfill the activation requirement, she instead deals a basic attack.
	Level 2 (Unlocks by level 21) The direct attack’s damage becomes equal to 75% of the depleted HP.
	Level 3 (Unlocks by level 101) The direct attack’s damage becomes equal to 85% of the depleted HP.
	Level 4 (Unlocks by level 181) The direct attack’s damage becomes equal to 100% of the depleted HP.

Piercing Shot is a versatile skill that deals with high damage to multiple enemies with added benefits like sustained Bleeding damage and potential self-healing. While effective, its random targeting can be unpredictable.

Cursed Bullet offers massive burst damage but comes with the risk of self-harm and relies on specific conditions to activate, making it less reliable.

Heart of Servitude

Servant’s Expertise

Skill Effects Summarized

Skill	Skill Effect
Heart of Servitude	Level 1 (Unlocks by level 41) At the start of the battle, this skill increases the chance to evade of both Dian and the ally with the highest ATK by 30%. Dian is enhanced by this skill for 4 turns, and the other target for 3 turns.
	Level 2 (Unlocks by level 121) The number of turns of［Increased Chance to Evade］becomes 6 for Dian, and 5 for the other target.
	Level 3 (Unlocks by level 201) The increase in all targets’ chance to evade becomes 50%.

Skill	Skill Effect
Servant’s Expertise	Level 1 (Unlocks by level 61) If Dian is attacked, and her remaining HP percentage falls below 40% while the number of allies who are alive are 2 or more, this skill grants ［Invisibility］to Dian (cannot be dispelled). At the start of each turn or when an ally is defeated, if the number of allies who are alive becomes 1 or less, ［Invisibility］is dispelled. This skill activates only 1 time per battle.
	Level 2 (Unlocks by level 141) Additionally strengthens her basic attack. When she deals a basic attack, she instead deals 1 physical attack equal to 250% of her ATK to 2 random enemies, and has a 50% chance to dispel 1 buff from each target. At the start of each turn or when an ally is defeated, if the number of allies who are alive becomes 1 or less, this buff is dispelled.
	Level 3 (Unlocks by level 221) The chance to dispel a target’s buff becomes 100%.

Dian's Heart of Servitude provides crucial survivability by boosting evasion for herself and an ally, making them more challenging to hit. While beneficial, the effect lasts longer for Dian than for her ally. Among all these skills, you should always watch out for Dian's EVD buff, which is the most troublesome buff she can use against your team.

Servant's Expertise offers a unique defensive option with Invisibility under specific conditions, allowing Dian to avoid enemy attacks.

Witches to Beat Dian

Dian Hard Counters

Gil’uial

Her Twilights's Delusion targets Dian's Heart of Servitude by dispelling evasion buffs, while Stardust provides substantial damage.

An Almighty Lesson enhances Gil'uial's debuff-inflicting capabilities, complementing Twilight's Delusion. The Witch of Twilight ensures Gil'uial's survival through critical hit resistance and a protective barrier.

Dian General Counters

Amleth	Nina	A.A.
Cerberus	Florence	Primavera
Cordie	Belle	Artie

Dian Sample Counter Teams

Dispel Damage Team

Buffer	Attacker	Debuffer	Attacker	Debuffer
Merlyn	Florence	Gil’uial	Sabrina	Nina

Gil'uial's Twilight's Delusion and Merlyn's Vine Stream excel at dispelling buffs, directly countering Dian's Heart of Servitude. Nina's Lost Child's Tears also offers to dispel capabilities, providing additional support. Florence's Scarlet Shimmer and Dance of Twin Lances offer high damage potential and can quickly reduce Dian's HP. Almost all the characters also provide buffs for increased damage output, critical hit resistance, barrier, and healing.

Witches Not To Use Against Dian

Tropon

Slow characters: Since Dian would have evasion boosts for her and her ally, you must avoid using slow characters to land the hits you want to counter her.

Tips for Beating Dian

Use Debuffers/Dispel Characters

Since Dian's Heart of Servitude provides evasion buffs, use characters with dispel abilities to counter this. Aside from that, characters with abilities to Faint, Sleep, or Silence can disrupt Dian's actions and prevent her from using her skills.

MementoMori Related Guides

Character Build Lists

All SR Rarity Character Builds

Soltina	Amleth	Fenrir
Florence	Moddey	Sabrina
Freesia	Amour	Rean
Dian	Ivy	Merlyn
Cordie	Nina	Mertillier
Mimi	Tropon	Hathor
Olivia	Primavera	Natasha
Lunalynn

All SR (Limited) Rarity Character Builds

Summer Amleth	Matilda	Yuni
Paladea	Eir	Morgana
Apostle Rosalie	Asahi	Alexandra
Minasumari	Kaguya	Summer Nina
Liselotte	Milla	Aine
Serruria	Tama	Meria
Festive Natasha	Eureka	Winter Soltina
Winter Lunalynn	Winter Tropon	Sonya
Gil’uial	Sivi	Stella
Fenny	Summer Cordie	Belle
Priscilla	Artie	Chiffon
Claudia	Luke	Summer Sabrina
Fia	Lea	Sophia
Winter Amour	Summer Moddey	Richesse
Veela	Carol	Tainted Iris
Elfriede	Rusalka	Cerberus
Fortina	Armstrong	Ophelia
A.A.	Valeriede	Witch Illya