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Fire Emblem Heroes (FEH)

Legendary Deirdre Builds and Best IVs

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FEH Legendary Deirdre Banner

This is a ranking page for the hero Deirdre - Fated Saint from the game Fire Emblem Heroes (FEH). Read on to learn the best IVs (Individual Values), best builds (Inherit Skill), weapon refinement, stats at Lv 40, and more for Legendary Deirdre.

Heroes With the Same Name
Deirdre - Fated Saint Icon Legendary Deirdre

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Legendary Lilina IconLegendary Lilina
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Legendary Deirdre IconLegendary Deirdre
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Legendary Byleth (M) IconLegendary Byleth (M)
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Mythic Medeus IconMythic Medeus
[9.0/10]
Arval IconArval
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Legendary Deirdre Rating and Basic Information

FEH Legendary Deirdre Banner

Overall Rating 9.0/10
Reroll Ranking (excluding Inherit Skill) B
(▶Reroll Ranking)
Ranking (including Inherit Skill) A
(▶FEH Tier List)

Deirdre - Fated Saint: Basic Information

Color / Weapon Type / Move Type
Rarity
What Kind of Character Are They? ・Refined Spirit Forest Writ deals dragon-effective damage, inflicts massive Atk/Res penalties onto Deirdre's foe, disables foe's adaptive damage, grants Deirdre bonus true damage, true DR, a guaranteed follow-up attack, post-combat healing, and grants Deirdre and her allies a Time's Pulse 4 effect.
・Balance Circlet II has full DR piercing, grants Deirdre DR on foe's attack and a Miracle effect.

Legendary Deirdre Skills at 5★


Might: 14  Range: 2
Accelerates Special trigger (cooldown count-1). Effective against dragon foes. If unit is within 3 spaces of an ally, inflicts Atk/Res-6 on foe during combat, unit makes a guaranteed follow-up attack, disables foe's skills that "calculate damage using the lower of foe's Def or Res," and also, if unit's Res > foe's Res at start of combat, inflicts penalty on foe's Atk/Res during combat = 80% of difference between Res stats at start of combat. (Maximum penalty of -12.)

Cooldown Count = 2
When Special triggers, boosts damage by 40% of unit's Res and neutralizes "reduces damage by X%" effects from foe's non-Special skills.
If unit's or foe's Special is ready or if unit's or foe's Special triggered before or during this combat and if unit can attack in combat, reduces damage from foe's next attack by 40% (once per combat; excluding area-of-effect Specials).
If unit’s HP > 1 and foe would reduce unit's HP to 0 during combat, unit survives with 1 HP (once per combat; considered a non-Special effect; does not stack with non-Special effects that allow unit to survive with 1 HP if foe's attack would reduce unit's HP to 0).

Grants Atk/Res+7. Inflicts Def-5.

At start of player phase or enemy phase, inflicts Atk/Res-6 and 【Discord】 on foes with Res less than unit's Res and that are within 2 spaces of another foe through their next actions.
Inflicts penalty on foe's Atk/Res during combat = number of foes inflicted with 【Discord】 within 2 spaces of target, including target, × 2, + 4 (max 10) and deals damage = 15% of unit's Res (excluding area-of-effect Specials).

At start of turn, inflicts Atk/Res-6 on nearest foes within 4 spaces through their next actions and grants Atk/Res+6 to unit for 1 turn.

Legendary Deirdre Best IVs

Recommended IVs

Stat Superboon/Superbane IV Recommendation
HP (18) HP Superbane ★★★☆☆
Atk (13) Attack Boon ★★★★★
Spd (6) No Spd IV ★★★☆☆
Def (4) No Def IV ★☆☆☆☆
Res (10) Res Bane ★★★★★

◯ = Stat gains +4 with a superboon, ✕= Stat goes down by -4 with a superbane, - = No assets or flaws

See the IV Checker for All Units Trait Fruits—How to Change IVs

When using an Ascendant Floret, we recommend getting the next superboon if it fits the hero. If not, consider what stat your hero needs most.

+Res / -Def

The best IVs for Legendary Deirdre are +Res and -Def. Boosting Res improves Deirdre's offensive and defensive abilities, being the basis for refined Spirit Forest Writ's true damage and true damage reduction effects.

Her Def is a clear dump stat, especially with Still Water 4, and should be the bane of choice.

+Res for a +10 merge

We recommend a +Res IV when merging Legendary Deirdre to +10. Increasing Res leads to the best performance.

Legendary Deirdre Best Builds

Invested Res Tank Legendary Deirdre

HOT
Assist Skill IconDraw Back
Emblem Icon: -
Attuned Skill Icon: -
Updated on 05/07/2025

How to Use, Explanation

This build uses premium skills to improve upon Legendary Deirdre's base kit, functioning as a Res tank while providing Ploy support at the same time.

General Use / Budget Legendary Deirdre

Assist Skill IconDraw Back
Emblem Icon: -
Attuned Skill Icon: -

How to Use, Explanation

Legendary Deirdre's base kit is already good to go as is. She will perform well as a magic attacker/check with it.

Source Heroes for All Skills

Legendary Deirdre Best Weapon Refine

Effect of Legendary Deirdre's Refined Weapon

Exclusive Weapon Effect from Refining (Special Effect Type)
SP: 400
Might: 14 Range: 2 HP:
Accelerates Special trigger (cooldown count-1).
Effective against dragon foes.
If unit initiates combat or is within 3 spaces of an ally, inflicts Atk/Res-6 on foe, reduces damage from foe's attacks by 20% of unit's Res (excluding area-of-effect Specials), unit makes a guaranteed follow-up attack, and disables foe's skills that "calculate damage using the lower of foe's Def or Res" during combat, and also, if unit's Res > foe's Res at start of combat, inflicts penalty on foe's Atk/Res during combat = difference between Res stats at start of combat (max 16).
At start of turn, and at start of enemy phase (except for in Summoner Duels), if unit is within 2 spaces of an ally, grants Atk/Res+6 and "neutralizes unit's penalties during combat" to unit and allies within 2 spaces of unit for 1 turn, and also, for unit and allies within 2 spaces of unit, if Special cooldown count is at its maximum value, grants Special cooldown count-1.
For allies within 2 spaces of unit, if Special cooldown count is at its maximum value after combat, grants Special cooldown count-1.
If unit initiates combat or is within 3 spaces of an ally, inflicts Atk/Res-6 on foe and deals damage = 20% of unit's Res during combat (excluding area-of-effect Specials), and restores 7 HP to unit after combat, and also, if Special cooldown count is at its maximum value, grants Special cooldown count-1 after combat.
Arena Medal:500 Divine Dew:200

We recommend the Special Effect Refine for Spirit Forest Writ

Refined Spirit Forest Writ grants Legendary Deirdre and nearby allies an effect similar to Time's Pulse 4 and improves upon Deirdre's combat by inflicting additional Atk/Res penalties onto her foe, granting Deirdre bonus true damage equal to 20% of her Res and 7 HP post-combat healing.

This refine is worth using mostly for the Time's Pulse 4 effect which can be maximized by running low cooldown Specials on the entire team. For Deirdre herself, this effect will always ensure that Balance Circlet II is pre-charged for every combat.

Legendary Deirdre Stats

Stat Rankings

Neutral Stats at Lv. 40 (5★)
177
HP
HP 40 40
Rank: 489/1322
Atk
Atk 43 43
Rank: 207/1322
Spd
Spd 32 32
Rank: 730/1322
Def
Def 19 19
Rank: 989/1322
Res
Res 43 43
Rank: 47/1322

Stat Values

Lv 40+10 Stats (5★)

HP Atk Spd Def Res Total
+10 Merges W/ Skill Bonuses 45 69 36 28 55 233
Lv.40 +10 45 48 36 23 48 200

HP Atk Spd Def Res Total
+HP
Lv.40 +10
47 47 36 23 47 200
+Atk
Lv.40 +10
44 51 36 23 47 201
+Spd
Lv.40 +10
44 47 39 23 47 200
+Def
Lv.40 +10
44 47 36 26 47 200
+Res
Lv.40 +10
44 47 36 23 50 200

Stats at Lv 40

HP Atk Spd Def Res Total
5★- Adjusted for Skills 40 64 32 24 50 210
5★ Lv.40 40 43 32 19 43 177

Initial Stats (with Skills)

HP Atk Spd Def Res Total
5★ Lv.1 18 27 6 4 10 65

Stat Comparison of Similar Heroes

Hero
HP
Atk
Spd
Def
Res
Total
40 48 38 18 49 193
40 49 18 32 49 188
40 48 36 17 47 188
40 45 31 23 43 182
39 46 30 21 46 182
Legendary Deirdre Icon Legendary Deirdre
40 43 32 19 43 177
40 44 27 20 46 177
43 39 25 23 40 170
40 35 24 32 35 166
36 41 32 17 39 165
40 39 28 19 36 162
42 35 31 21 33 162
41 38 17 35 30 161
35 35 28 18 35 151
38 37 33 20 23 151

Note: Stats bonuses from skills are not taken into account.

Legendary Deirdre Roles, Strengths, and Weaknesses

Legendary Deirdre Roles

Deirdre - Fated Saint Roles
Close Physical AttackClose-Physical Ranged Physical AttackRanged-Physical Close Magic AttackClose-Magic Ranged Magic ImageRanged-Magic
Physical Wall ImagePhysical Wall Magic Wall ImageMagic Wall Effective ImageEffective Weapon Movement Assist ImageMovement Assist
Exclusive Skill ImageExclusive Skill No All Range Counterattack ImageAll-Range Counter RecoveryRecovery No Refresher ImageRefresher
Legendary Hero ImageLegendary No Mythic Hero ImageMythic No Duo and Harmonized ImageDuo /
Harmonized
No Resplendent ImageResplendent

Legendary Deirdre is a ranged magic attacker (range = 2). Therefore, when not accounting for the Weapon Triangle, the amount of damage she deals will be equivalent to her Atk minus the foe's Res stat.

Legendary Deirdre Strengths

Refined Spirit Forest Writ is loaded with offensive, defensive, and supportive effects

Legendary Deirdre Attack Fire Emblem Heroes FEH

Legendary Deirdre's refined Spirit Forest Writ is a powerful blue tome that has in-combat effects and stat swings that all help her win in combat, while also having effects that support her allies during their combat.

Below is a summary of these effects:

Condition(s) Effect
Always Accelerates Special trigger (cooldown count-1).
Always Effective against dragon foes.
At start of turn and at start of enemy phase
Legendary Deirdre is within 2 spaces of an ally
Grants Atk/Res+6 and a "neutralizes unit's penalties during combat" status to Deirdre and allies within 2 spaces.
At start of turn and at start of enemy phase
Legendary Deirdre is within 2 spaces of an ally
For Deirdre and allies within 2 spaces: if Special cooldown count is at its maximum value, grants Special cooldown count-1.
Legendary Deirdre initiates combat or is within 3 spaces of an ally Inflicts Atk/Res-12 on foe during combat.
Legendary Deirdre initiates combat or is within 3 spaces of an ally Grants Deirdre bonus true damage equal to 20% of her Res.
Legendary Deirdre initiates combat or is within 3 spaces of an ally Grants Deirdre bonus true damage reduction equal to 20% of her Res.
Legendary Deirdre initiates combat or is within 3 spaces of an ally Deirdre makes a guaranteed follow-up attack.
Legendary Deirdre initiates combat or is within 3 spaces of an ally Disables foe's skills that apply adaptive damage.
Legendary Deirdre initiates combat or is within 3 spaces of an ally Grants Deirdre 7 HP post-combat healing.
Legendary Deirdre initiates combat or is within 3 spaces of an ally After combat, if Deirdre's Special cooldown count is at its maximum value, grants Special cooldown count-1.
Legendary Deirdre initiates combat or is within 3 spaces of an ally
Legendary Deirdre's Res > foe's Res at start of combat
Inflicts penalty on foe's Atk/Res during combat = difference between Res stats at start of combat. (Maximum penalty of -16.)

Balance Circlet II has full piercing, grants Deirdre damage reduction and a Miracle effect

Legendary Deirdre's Balance Circlet II is a 2 cooldown Special (1 after Spirit Forest Writ) that boosts her attack by 40% of her Res while also neutralizing the foe's percentage-based damage reduction effects completely.

Balance Circlet II grants Legendary Deirdre 40% damage reduction if her or her foe's Special is ready or already triggered, and also has a built-in Miracle effect, allowing Deirdre to survive one instance of defeat.

Balance Circlet II has great defensive effects that ensure Legendary Deirdre survives combat while also having a low cooldown. With refined Spirit Forest Writ's Time's Pulse 4 effects, Spirit Forest Writ will always be pre-charged before all of Deirdre's combats.

Legendary Deirdre Weaknesses

Abysmal Def

Legendary Deirdre's base Def sits at 19, which is further lowered by Still Water 4 if you choose to keep it equipped. This leaves her completely vulnerable to opponents that deal physical damage, especially melee foes that can partially avoid the conditions of Circlet of Balance.

Should you Unlock Potential?

Should You Unlock Potential for this Hero? Cannot Unlock Potential

Deirdre - Fated Saint Only Appears as a 5 Star Hero!

Deirdre - Fated Saint only appears as a 5 Star Hero. We will include whether or not you should Unlock Potential for Deirdre - Fated Saint if a 4 Star version is released!

Unlock Potential Tier List

Legendary Deirdre - List of Skills

Weapons

Skill Name Might Range Effect Learned At
4 2 No Effect 5★
6 2 No Effect 5★
9 2 No Effect 5★
14 2 Accelerates Special trigger (cooldown count-1). Effective against dragon foes. If unit is within 3 spaces of an ally, inflicts Atk/Res-6 on foe during combat, unit makes a guaranteed follow-up attack, disables foe's skills that "calculate damage using the lower of foe's Def or Res," and also, if unit's Res > foe's Res at start of combat, inflicts penalty on foe's Atk/Res during combat = 80% of difference between Res stats at start of combat. (Maximum penalty of -12.) 5★

Assists

This Hero has no Assist skills that can be learned.

Specials

Skill Name Effect Learned At
(Cooldown Count = 4) Boosts damage dealt by 50% of unit’s Res. 5★
(Cooldown Count = 3) Boosts damage dealt by 50% of unit’s Res. 5★
(Cooldown Count = 2) Boosts Special damage by 40% of unit's Res. If unit's HP > 1, foe would reduce unit's HP to 0, and both following conditions apply, unit survives with 1 HP:
・ Unit or foe's Special is ready, or unit or foe's Special triggered during this combat.
・ Unit initoates combat or foe's Range = 2.
(Once per map. Considered a non-Special effect. Does not stack with non-Special effects that allow unit to survive with 1 HP if foe's attack would reduce HP to 0.)
5★
(Cooldown Count = 2) When Special triggers, boosts damage by 40% of unit's Res and neutralizes "reduces damage by X%" effects from foe's non-Special skills.
If unit's or foe's Special is ready or if unit's or foe's Special triggered before or during this combat and if unit can attack in combat, reduces damage from foe's next attack by 40% (once per combat; excluding area-of-effect Specials).
If unit’s HP > 1 and foe would reduce unit's HP to 0 during combat, unit survives with 1 HP (once per combat; considered a non-Special effect; does not stack with non-Special effects that allow unit to survive with 1 HP if foe's attack would reduce unit's HP to 0).
5★

Passives

Skill Name Effect Learned At
Grants Atk/Res+3. Inflicts Def-3. 5★
Grants Atk/Res+4. Inflicts Def-4. 5★
Grants Atk/Res+5. Inflicts Def-5. 5★
Grants Atk/Res+7. Inflicts Def-5. 5★
At start of turn, if any foe’s Res ≤ unit’s Res-3 and that foe is adjacent to another foe, inflicts Res-3 on that foe through its next action. 5★
At start of turn, if any foe’s Res ≤ unit’s Res-3 and that foe is adjacent to another foe, inflicts Res-5 on that foe through its next action. 5★
At start of turn, if any foe’s Res ≤ unit’s Res-3 and that foe is adjacent to another foe, inflicts Res-7 on that foe through its next action. 5★
At start of player phase or enemy phase, inflicts Atk/Res-6 and 【Discord】 on foes with Res less than unit's Res and that are within 2 spaces of another foe through their next actions.
Inflicts penalty on foe's Atk/Res during combat = number of foes inflicted with 【Discord】 within 2 spaces of target, including target, × 2, + 4 (max 10) and deals damage = 15% of unit's Res (excluding area-of-effect Specials).
5★
Inflicts Atk/Res-1 on foe and neutralizes effects that grant "Special cooldown charge +X" to foe or inflict "Special cooldown charge -X" on unit during combat. 5★
Inflicts Atk/Res-2 on foe and neutralizes effects that grant "Special cooldown charge +X" to foe or inflict "Special cooldown charge -X" on unit during combat. 5★
Inflicts Atk/Res-3 on foe and neutralizes effects that grant "Special cooldown charge +X" to foe or inflict "Special cooldown charge -X" on unit during combat. 5★
Inflicts Res -3 on foes within 2 spaces through their next actions at the start of each turn. 5★
At start of turn, inflicts Atk/Res-3 on foes within 2 spaces through their next actions. 5★
At start of turn, inflicts Atk/Res-4 on foes within 2 spaces through their next actions. 5★
At start of turn, inflicts Atk/Res-6 on nearest foes within 4 spaces through their next actions and grants Atk/Res+6 to unit for 1 turn. 5★

Legendary Deirdre as a Source Hero

Legendary Deirdre Avatar

Value of Skills ★★★★☆

Legendary Deirdre has Still Water 4, Atk/Res Tempo 3, Atk/Res Discord, and Atk/Res Menace as inheritance options.

Prioritize Atk/Res Discord when using Legendary Deirdre for inheritance.

List of Source Heroes The Best Fodder Units

Community Feedback

How would you rate Legendary Deirdre?

Top tier hero. Must summon. 8
Votes
Summon if you need his/her hero archetype. 1
Votes
Summon if you like this hero. 29
Votes
Summon for his/her Skill Inheritance options. 2
Votes
Pass on this hero. 8
Votes

If you have feedback about this hero page, let us know in the comments section below!

How to Get Legendary Deirdre / Illustrations / Voice Actor / Quotes

How to Get Legendary Deirdre

Obtained through a Special Summoning Event!

Legendary Deirdre is a limited time Hero who can be pulled from a Legendary Hero Summoning event. They do not appear in regular summons.

Note: Not currently a featured hero in any Summon events.

Current Focuses and Which You Should Pull From

Voice Actor and Illustrator Information

Voice Actor
(English)
Erica Mendez
Illustrator Haimura Kiyotaka
Appears In

Illustration

FEH: Related Guides

Focus: Legendary & Mythic Hero Remix: Legendary Deirdre

Legendary & Mythic Hero Remix: Legendary Deirdre Banner

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[9.0/10]
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[8.5/10]
Mythic Medeus IconMythic Medeus
[9.0/10]
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[8.5/10]

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