Duo Eirika and Ephraim Builds and Best IVs

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
Red Tome Eirika	Legendary Eirika
Eirika	Winter Eirika
Duo Eirika	Brave Eirika
Summer Eirika	Attuned Eirika

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

Duo Eirika Rating and Basic Information

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	Red / Sword / Infantry
Rarity	5 Star
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★

Blade of Renais 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.)

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

Distant Foil 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.

Null Follow-Up 3 Disables foe’s skills that guarantee foe’s follow-up attack and foe’s skills that prevent unit’s follow-up attack.

Joint Drive Spd 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. (Duo Skills can be used once per map by tapping the Duo button. Duo Skills cannot be used by units deployed using Pair Up.)

Standard Effect 1

Duel
If unit is 5★ and level 40 and unit's stats total less than 190, treats unit's stats as 190 in modes like Arena. (Higher-scoring opponents will appear. Stat total calculation excludes any values added by merges and skills.)

Duo Eirika Best IVs

Recommended IVs

Stat	Superboon/Superbane	IV Recommendation
HP (18)		★★★☆☆
Atk (24)		★★★★★
Spd (13)		★★★★★
Def (8)		★★☆☆☆
Res (6)		★★☆☆☆

◯ = 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.

+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 Eirika

HOT
： Blade of Renais ： Reposition ： Luna ： -	： Distant Foil ： Null Follow-Up 3 ： Joint Drive Spd ： Sturdy Stance 2 ： -

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!

Oath Duo Eirika

HOT
： Blade of Renais ： Reposition ： Moonbow ： -	： Distant Counter ： Null Follow-Up 3 ： Atk/Spd Oath 3 ： Kestrel Stance 2 ： -

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 Heroes for All Skills

Duo Eirika Stats

Stat Rankings

Neutral Stats at Lv. 40 (5★)
177
HP	40	Rank: 489/1171
Atk	36	Rank: 666/1171
Spd	43	Rank: 182/1171
Def	30	Rank: 501/1171
Res	28	Rank: 479/1171

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

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
Aided Dagr	41	46	48	38	31	204
Brave Felix	40	47	48	35	29	199
Ogier	46	44	47	36	24	197
Severa	42	43	47	37	24	193
Brave Robin (M)	40	46	45	35	27	193
Inigo	40	44	45	34	30	193
Emblem Marth	41	45	47	33	27	193
Fallen Lloyd	41	43	46	31	32	193
Edward	40	43	46	43	21	193
Kagetsu	42	43	47	35	25	192
Lapis	41	41	45	29	32	188
Summer Fjorm	43	43	46	28	28	188
Fallen Byleth (F)	40	44	47	32	25	188
Felix	40	46	46	31	25	188
Alear (F)	40	43	46	32	26	187
Alear (M)	40	44	45	33	25	187
Ascended Fir	42	44	46	34	21	187
Lucia	40	41	45	29	32	187
Lumera	43	43	43	33	25	187
Ascended Mareeta	40	40	43	34	25	182
Galzus	40	43	41	36	22	182
Yen'fay	43	37	42	32	28	182
Priam	40	41	40	35	26	182
Malice	40	39	43	32	28	182
Brave Marth	41	41	43	32	25	182
Kamui	44	38	41	36	22	181
Flavia	41	40	41	36	23	181
Duo Eirika	40	36	43	30	28	177
Ninja Zihark	43	37	42	30	24	176
Catherine	43	39	41	30	23	176
Kris (M)	40	37	40	30	25	172
Say'ri	40	35	40	23	34	172
Young Marth	41	36	37	32	26	172
Larcei	41	36	40	30	25	172
Mareeta	41	35	42	31	23	172
Fallen Mareeta	42	33	41	29	23	168
Byleth (F)	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	Ranged-Physical	Close-Magic	Ranged-Magic
Physical Wall	Magic Wall	Effective Weapon	Movement Assist
Exclusive Skill	All-Range Counter	Recovery	Refresher
Legendary	Mythic	Duo / Harmonized	Resplendent

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

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!

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.

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
Iron Sword	6	1	No Effect	5★
Steel Sword	8	1	No Effect	5★
Silver Sword	11	1	No Effect	5★
Blade of Renais	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
New Moon	(Cooldown Count = 3) Resolve combat as if foe suffered Def/Res -30%.	5★
Luna	(Cooldown Count = 3) Treats foe's Def/Res as if reduced by 50% during combat.	5★

Passives

Skill Name	Effect	Learned At
Distant Foil	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★
Null Follow-Up 1	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★
Null Follow-Up 2	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★
Null Follow-Up 3	Disables foe’s skills that guarantee foe’s follow-up attack and foe’s skills that prevent unit’s follow-up attack.	5★
Spur Spd 1	Grants adjacent allies Spd +2 during combat.	5★
Joint Drive Spd	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

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.)

• List of Source Heroes
• The Best Fodder Units

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.

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)	Kira Buckland with Greg Chun
Illustrator	Asatani Tomoyo
Appears In	Fire Emblem: The Sacred Stones

Illustration

FEH: Related Guides

Special Heroes: Childhood Encounter

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

See All Red Heroes

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All Types of Red Weapons

Close-Range	Ranged
Sword	Red Tome
Red Breath	Red Dagger
Red Beast	Red Bow