Erinys Builds and Best IVs

This is a ranking page for the hero Erinys - Earnest Knight 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 Erinys.

Legendary Heroes - Byleth: The Fódlan Star Featured Heroes
Líf [9.0/10]	Plumeria [9.0/10]	Azelle [8.5/10]	Legendary Julia [9.0/10]
Erinys [8.5/10]	Nótt [9.0/10]	Hel [9.0/10]	Dagr [9.0/10]
Legendary Byleth (M) [9.0/10]	Legendary Alm [9.0/10]	Legendary Leif [9.0/10]	Bramimond [9.0/10]

Erinys Rating and Basic Information

Erinys - Earnest Knight: Basic Information

Color / Weapon Type / Move Type	Blue / Lance / Flying
Rarity	5 Star
What Kind of Character Are They?	・Strikes twice if support partner is nearby ・Possesses multiple, reliable debuff skills ・Posseses an upgraded Duel skill, B Duel Flying 4

Erinys Skills at 5★

Silesse Frost Might: 16　 Range: 1 Grants Atk +3. At the start of combat if foe's HP ≥ 50%, grants Atk/Spd+6 to unit dring combat, and also, if unit is within 2 spaces of support partner and initiates combat, unit attacks twice.

Harsh Command+ Range: 1 Neutralizes target ally's penalties (from skills like Panic, Threaten, etc.) and negative status effects (preventing counterattacks, restricting movement, etc.) that last through ally's next action. Converts any penalties on target ally into bonuses.

B Duel Flying 4 Grants HP+5, Atk/Spd/Def/Res+2. If unit is 5★, level 40, a Legendary or a Mythic Hero, and unit's stats total less than 175, treats unit's stats as 175 in modes like Arena. If unit is 5★, level 40, not a Legendary or a Mythic Hero, and unit's stats total less than 180, treats unit's stats as 180 in modes like Arena. (Higher-scoring opponents will appear. Stat total calculation excludes any values added by merges and skills.)

Chill Atk/Spd 2 At start of turn, inflicts Atk/Spd -5 on foe on the enemy team with the highest Atk+Spd total through its next action.

Atk/Def Rein 3 Inflicts Atk/Def-4 on foes within 2 spaces during combat.

Erinys Best IVs

Recommended IVs

Stat	Superboon/Superbane	IV Recommendation
HP (17)		★★★☆☆
Atk (26)		★★★★★
Spd (11)		★★★★☆
Def (10)		★★☆☆☆
Res (6)		★★☆☆☆

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

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.

+Atk/-Def

The best IVs for Erinys are +Atk and -Def. Her weapon can guarantee her a double strike through a simple trigger condition, so even a small change in +Atk is very efficient in raising her overall damage. Taking a bane in her Def stat is ideal because it will balance her defensive stats. Taking a bane in Res will make her very susceptible to magic attacks so its not smart to take a bane in said stat.

Be warned that Def is a superbane, though! It will take -4 Def instead of the normal -3. If you can, get at least 1 merge on Erinys to eliminate any bane you have on her.

+Atk for a +10 Merge

We recommend a +Atk IV when merging Erinys to 10. With +10 merges, Erinys's Atk stat will reach 64 with the weapon skill. With her ability to double strike, and potential to consistently quad-attack, she can definitely be a high-ceiling unit when it comes to offenses.

Erinys Best Builds

Death Blow Erinys

HOT
： Silesse Frost ： Reposition ： Ruptured Sky ： -	： Death Blow 4 ： Aerobatics 3 ： Joint Drive Atk ： Heavy Blade 3 ： -

How to Use, Explanation

A very expensive build for Erinys that builds Atk stat so that she can consistently activate Ruptured Sky with her double strikes and Heavy Blade 3 procs. It is simple, but she can hit very hard with this skill build.

Budget Erinys

： Silesse Frost ： Harsh Command+ ： Moonbow ： -

： B Duel Flying 4 ： Chill Atk/Spd 2 ： Atk/Def Rein 3 ： Aerobatics 3 ： -

How to Use, Explanation

A budget skill build for Erinys that slaps a standard-issue Moonbow, Atk/Def Rein 3 and a utility Sacred Seal, Aerobatics 3. Aerobatics helps her go to her support ally to trigger her weapon skill's double strike and the rest of her skills takes care of her damage input.

Source Heroes for All Skills

Erinys Stats

Stat Rankings

Neutral Stats at Lv. 40 (5★)
172
HP	39	Rank: 750/1160
Atk	37	Rank: 551/1160
Spd	41	Rank: 238/1160
Def	32	Rank: 362/1160
Res	23	Rank: 805/1160

Stat Values

Lv 40+10 Stats (5★)

Stats at Lv 40

Initial Stats (with Skills)

Stat Comparison of Similar Heroes

Hero	HP	Atk	Spd	Def	Res	Total
Bridal Say'ri	40	44	46	28	26	184
Rearmed Ingrid	38	44	47	30	25	184
Chloé	36	38	40	28	42	184
Caeldori	39	40	44	30	31	184
Summer Shez (M)	41	44	44	31	23	183
Vanessa	39	40	43	27	34	183
Winter Cordelia	40	44	43	33	23	183
Legendary Caeda	39	38	43	27	31	178
Valentian Est	35	41	38	25	37	176
Farina	39	36	38	30	30	173
Young Tana	40	39	41	29	23	172
Díthorba	43	35	38	23	33	172
Erinys	39	37	41	32	23	172
Tsubasa	39	32	40	26	30	167
Fiora	38	32	38	21	37	166
Hostile Springs Ryoma	40	35	36	28	23	162
Sumia	39	30	39	29	25	162
Spring Marisa	42	33	38	28	21	162
Bridal Tanith	37	34	36	33	21	161
Hinoka	41	35	32	25	24	157
Tana	36	34	36	25	25	156

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

Erinys Roles, Strengths, and Weaknesses

Erinys Roles

Erinys - Earnest Knight 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

Erinys 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.

Erinys Strengths

Silesse Frost allows Erynis opportunities to score quad-attacks

When Erinys is within 2 spaces of her support partner and she initiates an attack, she strikes twice similar to how Brave weapons work. Since this is an extra attack and not a follow-up attack, she can still land a follow-up attack that doubles her attacks. This results in 4 attacks if she is able to win the Spd check in the player phase. The +6 Atk/Spd bonus helps a lot in the Spd check.

53x4! 216 damage in a single combat instance for Erinys

B Duel Flying 4 Raises your Arena score

B Duel Flying 4 is a special skill that treats the unit’s stats as 175 in the Arena, allowing your overall score to increase when using her. It is usable by any blue flying unit, so equip it and increase your score as you would like, but keep in mind that as an A slot skill it means you will lose the ability to useful, powerful A skills like Fury 4 or Atk/Spd Solo 4.

Because it is an upgrade from B Duel Flying 3, it also gives Atk/Spd/Def/Res +2 on top of the original +5 HP.

Turn Debuffs into Bonuses

Harsh Command+ is a very powerful assist skill that not only neutralizes penalties on an ally, but it also converts them into bonuses. This skill is a tide turner in battles and especially useful in Aether Raids, where debuffs are coming not only from enemy heroes, but defensive structures as well.

Carries reliable debuffs

Erinys has two reliable debuffs:

1. Chill Atk/Spd 2 debuffs one of the most powerful offensive unit in the enemy team.
2. Atk/Def Rein 3 inflicts an Atk/Def debuff in a modest area around her.

Since she is not required to enter combat for the debuffs to take effect, she can be a semi-support unit of some kind especially when combined with her native Harsh Command+. Take note of this when trying to run her in an all flier team. As long as her support partner is alive to allow her to score quad-attacks, she is in a good place offensively and she does not require much support at that point to be effective.

Erinys Weaknesses

Low Res

Erinys's Res only sits at 23 at Lv.40. This makes it easy for magic users to take her out. Be mindful of Erinys's positioning in relation to magical units that can easily take her out.

Silesse Frost dependent on support partner

While Silesse Frost does carry powerful effects, the second strike requires Erinys to be within 2 spaces of her support partner. This means that without prior planning in team building, the second strike cannot be landed. This is a huge blow to her overall viability as a unit so make sure to prepare beforehand!

B Duel Flying 4 is mainly for scoring purposes

While B Duel Flying 4 does give some nice stats, the A skill can be home to very powerful skills that are cornerstones for great builds. If you plan to use Erinys outside of the Arena, make sure to get her an A skill that allows her to perform better in combat.

Weak to bows

As a flying unit, Erinys takes 1.5x damage from bows and weapons effective on flying units. Be sure to keep them out of the range of archers and leave them to other units.

Heroes with Effective Skills

Should you Unlock Potential?

Erinys - Earnest Knight Only Appears as a 5 Star Hero!

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

Unlock Potential Tier List

Erinys - List of Skills

Weapons

Skill Name	Might	Range	Effect	Learned At
Iron Lance	6	1	No Effect	5★
Steel Lance	8	1	No Effect	5★
Silver Lance	11	1	No Effect	5★
Silesse Frost	16	1	Grants Atk +3. At the start of combat if foe's HP ≥ 50%, grants Atk/Spd+6 to unit dring combat, and also, if unit is within 2 spaces of support partner and initiates combat, unit attacks twice.	5★

Assists

Skill Name	Range	Effect	Learned At
Harsh Command	1	Converts penalties on target into bonuses.	5★
Harsh Command+	1	Neutralizes target ally's penalties (from skills like Panic, Threaten, etc.) and negative status effects (preventing counterattacks, restricting movement, etc.) that last through ally's next action. Converts any penalties on target ally into bonuses.	5★

Specials

Passives

Skill Name	Effect	Learned At
B Duel Flying 1	Grants HP+3. If unit is 5★ and level 40 and unit’s stats total less than 160, treats unit’s stats as 160 in modes like Arena. (Higher-scoring opponents will appear. Stat total calculation excludes any values added by merges and skills.)	5★
B Duel Flying 2	Grants HP+4. If unit is 5★ and level 40 and unit’s stats total less than 165, treats unit’s stats as 165 in modes like Arena. (Higher-scoring opponents will appear. Stat total calculation excludes any values added by merges and skills.)	5★
B Duel Flying 3	Grants HP+5. If unit is 5★ and level 40 and unit’s stats total less than 170, treats unit’s stats as 170 in modes like Arena. (Higher-scoring opponents will appear. Stat total calculation excludes any values added by merges and skills.)	5★
B Duel Flying 4	Grants HP+5, Atk/Spd/Def/Res+2. If unit is 5★, level 40, a Legendary or a Mythic Hero, and unit's stats total less than 175, treats unit's stats as 175 in modes like Arena. If unit is 5★, level 40, not a Legendary or a Mythic Hero, and unit's stats total less than 180, treats unit's stats as 180 in modes like Arena. (Higher-scoring opponents will appear. Stat total calculation excludes any values added by merges and skills.)	5★
Chill Atk/Spd 1	At start of turn, inflicts Atk/Spd-3 on foe on the enemy team with the highest Atk+Spd total through its next action.	5★
Chill Atk/Spd 2	At start of turn, inflicts Atk/Spd -5 on foe on the enemy team with the highest Atk+Spd total through its next action.	5★
Atk/Def Rein 1	Inflicts Atk/Def-2 on foes within 2 spaces during combat.	5★
Atk/Def Rein 2	Inflicts Atk/Def-3 on foes within 2 spaces during combat.	5★
Atk/Def Rein 3	Inflicts Atk/Def-4 on foes within 2 spaces during combat.	5★

Erinys as a Source Hero

Inheriting B Duel Flying 4 or Atk/Def Rein 3

Erinys can be used to inherit B Duel Flying 4 or Atk/Def Rein 3. If you are able to inherit B Duel Flying 3 from another unit, you can get both skills from Erinys! However, Erinys is a powerful hero whom you can provide some firepower for your flier teams. Please think carefully before fodderring her off!

• List of Source Heroes
• The Best Fodder Units

How to Get Erinys / Illustrations / Voice Actor / Quotes

How to Get Erinys

Obtain Through Regular Summon

Erinys is a Hero who can be pulled from any summon.

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

Current Focuses and Which You Should Pull From

Voice Actor and Illustrator Information

Illustration

FEH: Related Guides

Legendary Heroes - Byleth: The Fódlan Star

Heroes from Legendary Heroes - Byleth: The Fódlan Star
Líf [9.0/10]	Plumeria [9.0/10]	Azelle [8.5/10]	Legendary Julia [9.0/10]
Erinys [8.5/10]	Nótt [9.0/10]	Hel [9.0/10]	Dagr [9.0/10]
Legendary Byleth (M) [9.0/10]	Legendary Alm [9.0/10]	Legendary Leif [9.0/10]	Bramimond [9.0/10]

See All Blue Heroes

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Lance	Blue Tome
Blue Breath	Blue Dagger
Blue Beast	Blue Bow