Duo Eirika and Ephraim Builds and Best IVs | Fire Emblem Heroes (FEH)

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This is a ranking page for the hero Eirika - Twin Refulgence 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 Duo Eirika.

Heroes With the Same Name
Eirika - Twin Refulgence Icon Duo Eirika

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Duo Eirika Icon Duo Eirika
[9.0/10]
Young Tana Icon Young Tana
[9.0/10]
Young Lyon Icon Young Lyon
[8.5/10]
Young LYoung L'Arachel
[9.0/10]

Duo Eirika Rating and Basic Information

FEH Duo Eirika Banner

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

Eirika - Twin Refulgence: Basic Information

Color / Weapon Type / Move Type
Rarity
What Kind of Character Are They? ・Duo Skill grants a team-wide damage reduction that scales with Spd
・Leverages 20% of opponents Def stat as extra damage
・Possesses a self heal that scales with opponents Def stat
・Possesses tools for both battle phases

Duo Eirika Skills at 5★


Might: 16  Range: 1
Accelerates Special trigger (cooldown count-1). If unit initiates combat or is within 2 spaces of an ally, grants Atk/Spd/Def/Res+5 to unit, and also if 【Bonus】 or 【Penalty】 is active on unit, deals damage = 20% of foe's Def, and also if unit deals damage to foe during combat, restores HP to unit = 20% of foe's Def. (Triggers even if 0 damage is dealt.)

Cooldown Count = 3
Treats foe's Def/Res as if reduced by 50% during combat.

If sword, lance, axe, bow, dagger, or beast foe initiates combat, grants Atk/Def+5 to unit during combat and unit can counterattack regardless of foe's range.

Disables foe’s skills that guarantee foe’s follow-up attack and foe’s skills that prevent unit’s follow-up attack.

Grants Spd +4 to allies within 2 spaces during combat. If unit is within 2 spaces of an ally, grants Spd +4 to unit during combat.

Duo Eirika's Duo Skill Effect

Duo Skill
Grants Dodge to unit and allies within 3 rows and 3 columns centered on unit.
Once used, duo skill cannot be activated right away. At start of odd-numbered turns, if duo skill has already been used, unit can use Duo skill again.
【Dodge】
If unit's Spd > foe's Spd, reduce damage from attacks during combat and from area-of-effect Specials (excluding Røkkr area-of-effect Specials) by percentage = difference between stats x 4 (max 40%).

Duo Eirika Best IVs

Recommended IVs

Stat Superboon/Superbane IV Recommendation
HP (18) HP Superbane ★★★☆☆
Atk (24) No Attack IV ★★★★★
Spd (13) Spd Boon ★★★★★
Def (8) Def Bane ★★☆☆☆
Res (6) Res Bane ★★☆☆☆

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

+Spd/-Res

The best IVs for Duo Eirika are +Spd and -Res. A higher Spd stat allows Duo Eirika to get a ton of follow-up attacks on her foes. This also helps her effectively leverage the Spd-based damage reduction she gets from her Duo Skill. Her Res is of less importance, so it is safe to take as a bane.

+Spd for a +10 Merge

We recommend a +Spd IV when merging Duo Eirika to 10. This is for the same reasons as above! Maximize her Spd and she will be very bulky thanks to her Duo Skill.

You can also get a +Atk IV if you prefer, but +Spd is arguably better in most situations.

Duo Eirika Best Builds

Budget Duo EirikaHOT

Special Skill IconLuna

See Explanation and Source Heroes

How to Use, Explanation

A budget setup for Duo Eirika! Her kit is already very complete, so you only need a movement-assist skill and a Sacred Seal of choice. Sturdy Stance 2 is just one of the many options you can take and it synergizes well with the rest of her kit!

Source Hero

Skill Hero
Eirika - Twin Refulgence Icon Eirika - Twin Refulgence (5★)
Eirika - Twin Refulgence Icon Eirika - Twin Refulgence (5★)
Eirika - Twin Refulgence Icon Eirika - Twin Refulgence (5★)
Eirika - Twin Refulgence Icon Eirika - Twin Refulgence (5★)
Eirika - Twin Refulgence Icon Eirika - Twin Refulgence (5★)

▶Other information regarding skills can be found here

Oath Duo EirikaHOT

Special Skill IconMoonbow

See Explanation and Source Heroes

How to Use, Explanation

A high budget build that takes advantage of the buffs provided by Atk/Spd Oath 3, even if you can't activate her Duo skill. If you would like to also support your allies, you can opt for another C skill. Or you can opt for Time's Pulse 3 to immediately have your Special ready.

Source Hero

Skill Hero
Eirika - Twin Refulgence Icon Eirika - Twin Refulgence (5★)
Eirika - Twin Refulgence Icon Eirika - Twin Refulgence (5★)

▶Other information regarding skills can be found here

Source Heroes for All Skills

Duo Eirika Stats

Stat Rankings

Neutral Stats at Lv. 40 (5★)
Stat Total 177
177
HP
HP 40 40
Rank: 293/648
Atk
Atk 36 36
Rank: 179/648
Spd
Spd 43 43
Rank: 2/648
Def
Def 30 30
Rank: 239/648
Res
Res 28 28
Rank: 221/648

Stat Values

Lv 40+10 Stats (5★)

HP Atk Spd Def Res Total
+10 Merges W/ Skill Bonuses 45 57 48 34 32 216
Lv.40 +10 45 41 48 34 32 200

See Lv 40 +10 Stats With IVs
HP Atk Spd Def Res Total
+HP
Lv.40 +10
47 40 47 34 32 200
+Atk
Lv.40 +10
44 43 47 34 32 200
+Spd
Lv.40 +10
44 40 51 34 32 201
+Def
Lv.40 +10
44 40 47 37 32 200
+Res
Lv.40 +10
44 40 47 34 35 200

Stats at Lv 40

HP Atk Spd Def Res Total
5★- Adjusted for Skills 40 52 43 30 28 193
5★ Lv.40 40 36 43 30 28 177

Initial Stats (with Skills)

HP Atk Spd Def Res Total
5★ Lv.1 18 24 13 8 6 69

Stat Comparison of Similar Heroes

Hero
HP
Atk
Spd
Def
Res
Total
Duo Eirika Icon Duo Eirika
40 36 43 30 28 177
43 37 42 30 24 176
43 39 41 30 23 176
41 36 40 30 25 172
40 35 40 23 34 172
40 37 40 30 25 172
41 36 37 32 26 172
41 35 42 31 23 172
42 33 41 29 23 168
40 34 40 33 21 168

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

Duo Eirika Roles, Strengths, and Weaknesses

Duo Eirika Roles

Eirika - Twin Refulgence Roles
Close Physical Attack ImageClose-Physical Ranged Physical AttackRanged-Physical Close Magic AttackClose-Magic Ranged MagicRanged-Magic
Physical Wall ImagePhysical Wall Magic WallMagic Wall Effective ImageEffective Weapon Movement Assist ImageMovement Assist
Exclusive Skill ImageExclusive Skill All Range Counterattack ImageAll-Range Counterattack RecoveryRecovery No Refresher ImageRefresher
No Legendary Hero ImageLegendary No Mythic Hero ImageMythic Duo and Harmonized ImageDuo/Harmonized No Resplendent ImageResplendent

Duo Eirika is a close physical attacker (range = 1). Therefore, when not accounting for the Weapon Triangle, the amount of damage she deals will be equivalent to her Atk minus the foe's Def stat.

The effect of Eirika's Duo Skill is shown below

Duo Eirika Fire Emblem Heroes FEH

Her Duo Skill grants her and all allies within 3 spaces of her damage reduction based on how much faster (Spd) they are compared to the opponents they are up against! This is very powerful in the right lineups as whole teams can benefit if their Spd levels are set up well!

It can be used every 3 turns so time it nicely and it can win you some battles.

Duo Eirika's Duo Skill Effect

Duo Skill
Grants Dodge to unit and allies within 3 rows and 3 columns centered on unit.
Once used, duo skill cannot be activated right away. At start of odd-numbered turns, if duo skill has already been used, unit can use Duo skill again.
【Dodge】
If unit's Spd > foe's Spd, reduce damage from attacks during combat and from area-of-effect Specials (excluding Røkkr area-of-effect Specials) by percentage = difference between stats x 4 (max 40%).

Duo Eirika Strengths

Blade of Renais grants an all-stat buff and leverages Def stat against enemies!

Fire Emblem Heroes FEH Young Duo Eirika

The buffs from Blade of Renais can be seen above.

Blade of Renais will grant +5 Atk/Spd/Def/Res to Duo Eirika if:

  • She initiates combat OR (player phase)
  • She is 2 spaces from an ally (enemy phase)

If you pay even minimal attention, it is almost impossible not to take advantage of this! Enjoy the stat buffs!

If one of the trigger conditions are met, it also allows Eirika to deal damage equal to 20% of foe's Def and restores the same amount of HP to Eirika. This makes her a powerful unit against foes with high Def levels.

Additionally, Blade of Renais accelerates Duo Eirika's Special trigger.

Can Counterattack All Physical Attacks

The A skill Distant Foil allows Eirika to counterattack all physical attacks regardless of distance. This means Eirika can counterattack enemies that are even two tiles away.

Another perk of Distant Foil is that it gives a Atk/Def +5 to Eirika whenever physical enemies initiate combat.

Combined with the whole kit, this skill makes Duo Eirika and Ephraim a solid dual phase unit.

Null Follow-up Prevents Enemy Follow-up Attacks and Ensures Eirika's Follow-up Attacks

Null Follow Up 3 neutralizes effects that guarantee enemy follow-up attacks on Duo Eirika and effects that prevent Duo Eirika from executing follow-up attacks. This makes Eirika a great counter for units that have skills like Bow Breaker 3, Bold Fighter 3 or Wary Fighter 3.

Speed Buff for the Whole Team!

Joint Drive Spd grants +4 Spd to Eirika and Allies if they are within 2 spaces of each other during combat. It is a useful skill to have in most team compositions as it is both easy to utilize and everyone can benefit from it. In addition, it is a combat buff making it easy to stack with many other buffs like the buffs from Blade of Renais.

Young Eirika Fire Emblem Heroes Damage Reduction

Eirika and Ephraim take only 5 damage instead of the calculated 7.

This synergizes quite nicely with the Duo Skill and allows your whole team to take less damage!

Duo Eirika Weaknesses

Should you Unlock Potential?

Should You Unlock Potential for this Hero? Cannot Unlock Potential

Eirika - Twin Refulgence Only Appears as a 5 Star Hero!

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

Unlock Potential Tier List

Duo Eirika - List of Skills

Weapons

Skill Name Might Range Effect Learned At
6 1 No Effect 5★
8 1 No Effect 5★
11 1 No Effect 5★
16 1 Accelerates Special trigger (cooldown count-1). If unit initiates combat or is within 2 spaces of an ally, grants Atk/Spd/Def/Res+5 to unit, and also if 【Bonus】 or 【Penalty】 is active on unit, deals damage = 20% of foe's Def, and also if unit deals damage to foe during combat, restores HP to unit = 20% of foe's Def. (Triggers even if 0 damage is dealt.) 5★

Assists

This Hero has no Assist skills that can be learned.

Specials

Skill Name Effect Learned At
(Cooldown Count = 3) Resolve combat as if foe suffered Def/Res -30%. 5★
(Cooldown Count = 3) Treats foe's Def/Res as if reduced by 50% during combat. 5★

Passives

Skill Name Effect Learned At
If sword, lance, axe, bow, dagger, or beast foe initiates combat, grants Atk/Def+5 to unit during combat and unit can counterattack regardless of foe's range. 5★
At start of combat, if unit’s HP  = 100%, disables foe’s skills that guarantee foe’s follow-up attack and foe’s skills that prevent unit’s follow-up attack. 5★
At start of combat, if unit’s HP ≥ 50%, disables foe’s skills that guarantee foe’s follow-up attack and foe’s skills that prevent unit’s follow-up attack. 5★
Disables foe’s skills that guarantee foe’s follow-up attack and foe’s skills that prevent unit’s follow-up attack. 5★
Grants adjacent allies Spd +2 during combat. 5★
Grants Spd +4 to allies within 2 spaces during combat. If unit is within 2 spaces of an ally, grants Spd +4 to unit during combat. 5★

Duo Eirika as a Source Hero

Duo Eirika Avatar

Value of Skills ★★★★★

Inheriting Distant Foil, Null Follow-Up 3, or Joint Drive Spd

Duo Eirika can be used to inherit Distant Foil, Null Follow-Up 3 or Joint Drive Spd.

Take note that:

  • Distant Foil requires no prerequisite skills.
  • Null Follow-Up 3 requires 2 prerequisite skills.
  • Joint Drive Spd requires 3 prerequisitie skills.

You can get 4 skills from 1 copy of Duo Eirika, so choose wisely! Make use of other units for fodder to maximize each copy. (e.g. Getting Drive Spd 2 from another unit so you can get both Joint Drive Spd, and Null Follow-Up 3, or getting Spur Spd 1 so you can get both Joint Drive Spd and Distant Foil.)

How to Get Duo Eirika / Illustrations / Voice Actor / Quotes

How to Get Duo Eirika

Obtained through a Special Summoning Event!

Duo Eirika is a limited time Hero who can be pulled from a Special Heroes Summoning Event. They do not appear in regular summons.

Event Name Focus
Childhood Encounter Banner
Childhood Encounter
Special Heroes Summon
Eirika - Twin Refulgence Icon Duo Eirika

Starts:04/19/2021
Ends:

▶Current Focuses and Which You Should Pull From

Voice Actor and Illustrator Information

Voice Actor
(English)
Kira Bucklan with Greg Chun
Illustrator Asatani Tomoyo
Appears In

Illustration

Duo Eirika.pngEnlarge Duo Eirika.pngEnlarge Duo Eirika.pngEnlarge Duo Eirika.pngEnlarge

FEH: Related Links

Special Heroes: Childhood Encounter

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Heroes from Special Heroes - Childhood Encounter
Duo Eirika Icon Duo Eirika
[9.0/10]
Young Tana Icon Young Tana
[9.0/10]
Young Lyon Icon Young Lyon
[8.5/10]
Young LYoung L'Arachel
[9.0/10]

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    • >>[248] go for it then take the merge afterwrd. Atk is Reinhardt's most IMPORTANT stat.

    • >>[63]
      Thanks a lot Mike. Yes that’s duo/ninja Lyn. I’ll keep it then.

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