Seiros Builds and Best IVs

This is a ranking page for the hero Seiros - Saint of Legend 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 Seiros.

Seiros Rating and Basic Information

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

Seiros - Saint of Legend: Basic Information

Color / Weapon Type / Move Type	Blue / Blue Breath / Infantry
Rarity	5 Star
What Kind of Character Are They?	・An Anima-type Mythic hero ・Scores guaranteed follow-up attacks in the player phase ・Grants massive buffs to other Mythic heroes on her team

Seiros Skills at 5★

Aurora Breath Might: 16　 Range: 1 Grants Atk +3. If unit initiates combat, grants Atk+6 to unit during combat and unit makes a guaranteed follow-up attack. If foe initiates combat, grants Def/Res +6 during combat and foe cannot make a follow-up attack. If foe's Range =2, calculates damage using the lower of foe's Def or Res.

Glacies Cooldown Count = 4 Boosts damage dealt by 80% of unit’s Res.

Atk/Res Scowl 4 If foe initiates combat or foe's HP ≥ 75% at start of combat, grants Atk/Res+7 to unit during combat, and also, if foe's attack can trigger foe's Special and unit's Res ≥ foe's Res +5 during combat, inflicts Special cooldown count+1 on foe before foe's first attack. (Cannot exceed the foe's maximum Special cooldown.)

Dragon Wall 3 If unit's Res > foe's Res, reduces 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%).

Wings of Light+ If the number of Mythic Hero allies on team ≤ 3 (including unit), grants Atk/Spd/Def/Res+X (X = turn number + 3; max 8) and "reduces damage from attacks (excluding area-of-effect Specials) by 30%" to Mythic Hero allies (excluding unit) during their combat. Grants Atk/Spd/Def/Res+4 and Special cooldown charge +1 (only highest value applied; does not stack) per attack to allies within 3 rows or 3 columns centered on unit during their combat. If there is a Mythic Hero ally on your team (excluding unit), or if there is an ally within 3 rows or 3 columns centered on unit, grants Atk/Spd/Def/Res+5 to unit, reduces damage from attacks during combat by 30% (excluding area-of-effect Specials), and grants Special cooldown charge +1 to unit per attack during combat (only highest value applied; does not stack).

Seiros Best IVs

Recommended IVs

Stat	Superboon/Superbane	IV Recommendation
HP (18)		★★★☆☆
Atk (28)		★★★★☆
Spd (5)		★☆☆☆☆
Def (9)		★★★★★
Res (12)		★★★★★

◯ = 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/-Spd

The best IVs for Seiros are +Res and -Spd. Seiros' kit revolves around the Res stat, and it is discussed in the Strengths and Weaknesses section. Glacies, Dragon Wall 3, her stat distribution and her overall playstyle relies on Res so it is no-brainer to take it. Her Spd is very low and is only less importance so it is safe to take as a bane. She relies on her skills to score follow-up attacks so do not worry about not landing follow-up attacks.

Be warned as Spd is a superbane, but it does not really matter as she does not rely on it at all.

+Res for a +10 Merge

This is for the same reason as above. The importance of her Res stat cannot be overlooked. With this IV, she reaches 47 Res at +10 Merges. At this point, it allows her to take lots of damage through damage calculation and through the effects of Dragon Wall 3. If you plan to replace Dragon Wall with another skill, you can go for a +Def or a +Atk IV instead.

Seiros Best Builds

Special Spiral Seiros

HOT
： Aurora Breath ： Reposition ： Glacies ： -	： Atk/Res Scowl 4 ： Special Spiral 4 ： Wings of Light+ ： Distant Counter (D) ： -

How to Use, Explanation

Special Spiral lowers Glacies cooldown, allowing Seiros to trigger it once per combat using refined Aurora Breath's effects.

Budget Seiros

： Aurora Breath ： Reposition ： Iceberg ： -

： Atk/Res Scowl 4 ： Dragon Wall 3 ： Wings of Light+ ： Distant Counter (D) ： -

How to Use, Explanation

Seiros' base kit works decently well, utilizing her as a mixed phase unit with refined Aurora Breath and the Distant Counter (D) Sacred Seal.

Source Heroes for All Skills

Seiros Best Weapon Refine

Effect of Seiros's Refined Weapon

Exclusive Weapon Effect from Refining (Special Effect Type)
Aurora Breath	SP: 400
Might: 16　Range: 1　HP: 3 Grants Atk+3. Grants Atk/Def/Res+6, unit makes a guaranteed follow-up attack, foe cannot make a follow-up attack, and inflicts Special cooldown charge -1 on foe per attack (only highest value applied; does not stack) during combat. If foe's Range = 2, calculates damage using the lower of foe's Def or Res. Accelerates Special trigger (cooldown count-1). At start of combat, if unit's HP ≥ 25%, grants Atk/Def/Res+4 to unit and unit's first attack deals damage = 15% of foe's Res during combat (excluding area-of-effect Specials), and also, if unit's Res > foe's Res, reduces damage from attacks during combat and from area-of-effect Specials (excluding Røkkr area-of-effect Specials) by percentage = difference between stats × 4 (max 40%). At start of combat, if unit's HP ≥ 25%, restores 7 HP to unit after combat. ：500　：200

We recommend the Special Effect Refine for Aurora Breath

Refining Aurora Breath is significantly better than using any other refine as it turns Seiros from a meme into a useful unit.

When refined, Aurora Breath has all of these effects:

• Grants Seiros a permanent Atk+3 stat boost and an accelerated Special trigger.
• Grants Seiros Atk/Def/Res+10 during combat.
• Grants Seiros a guaranteed follow-up attack and denies her foe's follow-up attack.
• Slows down her foe's Special cooldown charges.
• Deals adaptive damage to ranged foes.
• Seiros's first attack deals bonus true damage equal to 15% of her Res.
• Grants Seiros a Dragon Wall effect.
• Grants Seiros 7 HP post-combat healing.

Seiros Stats

Stat Rankings

Neutral Stats at Lv. 40 (5★)
177
HP	40	Rank: 489/1171
Atk	42	Rank: 279/1171
Spd	18	Rank: 1090/1171
Def	37	Rank: 156/1171
Res	40	Rank: 87/1171

Stat Values

Lv 40+10 Stats (5★)

	HP	Atk	Spd	Def	Res	Total
+10 Merges W/ Skill Bonuses	45	66	22	41	45	219
Lv.40 +10	45	47	22	41	45	200

Stats at Lv 40

	HP	Atk	Spd	Def	Res	Total
5★- Adjusted for Skills	40	61	18	37	40	196
5★ Lv.40	40	42	18	37	40	177

Initial Stats (with Skills)

	HP	Atk	Spd	Def	Res	Total
5★ Lv.1	18	28	5	9	12	72

Stat Comparison of Similar Heroes

Hero	HP	Atk	Spd	Def	Res	Total
Fallen Anankos	42	43	44	36	31	196
Ascended Idunn	45	43	26	43	38	195
Mythic Lumera	37	43	46	27	40	193
New Year Kana (F)	37	43	45	27	41	193
Halloween Corrin (F)	40	42	45	36	30	193
Legendary Fae	40	42	28	37	41	188
Halloween Sothis	40	36	42	31	34	183
Legendary Myrrh	40	39	25	42	36	182
Legendary Tiki (Young)	45	34	35	37	29	180
Seiros	40	42	18	37	40	177
Halloween Tiki (Young)	39	39	42	32	25	177
Fallen Corrin (M)	42	38	38	33	26	177
Lilith	39	36	41	27	30	173
Adrift Corrin (M)	42	35	35	31	24	167
Kana (M)	40	31	33	31	29	164
Nowi	45	34	27	30	27	163
Naga	37	30	36	33	26	162
Corrin (F)	41	27	34	34	21	157

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

Seiros Roles, Strengths, and Weaknesses

Seiros Roles

Seiros - Saint of Legend 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

Seiros is a close magic 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 Res stat. However, because of the effects of Aurora Breath, she will use the Def stat to calculate damage if it is lower than the foe's Res stat.

A Mythic Hero who can boost allies' HP and Atk

Eff.	Atk+3	Spd+4	Def+5	Res+5

Seiros is a Mythic Hero who will grant you an Anima Blessing when summoned. During Anima Season, Seiros' allies who also have a Anima Blessing will receive a HP+5 and Atk+3 to their stats, increasing the party's viability.

Seiros Strengths

Refined Aurora Breath has multiple effects

Refined Aurora Breath is loaded with multiple effects that all work together to make Seiros formidable in combat.

To summarize, this refined weapon has the following effects:

• Grants Seiros a permanent Atk+3 stat boost and an accelerated Special trigger.
• Grants Seiros Atk/Def/Res+10 during combat.
• Grants Seiros a guaranteed follow-up attack and denies her foe's follow-up attack.
• Slows down her foe's Special cooldown charges.
• Seiros's first attack deals bonus true damage equal to 15% of her foe's Res.
• Grants Seiros a Dragon Wall effect.
• Grants Seiros 7 HP post-combat healing.

All of these effects stack and make facing Seiros difficult, requiring certain effects to both deal significant damage in return and survive her attacks.

Heavily rewarded when stacking the Res stat

In addition to helping Dragon Wall reduce more damage, stacking Res will also allow Seiros to deal more damage through Glacies! This means Seiros' Res can be very valuable. Do your best to stack this helpful stat on Seiros.

Wings of Light+ provides buffs to Mythic allies

Seiros' exclusive C skill Wings of Light+ grants bonus Atk/Spd/Def/Res (based on turn number +3; max 8) and 30% damage reduction on all attacks to Mythic hero allies, making them tougher to defeat, especially in Aether Raids where they cannot receive Mythic blessing bonuses.

Wings of Light+ also grants Atk/Spd/Def/Res+4 and Special cooldown charge acceleration to all allies within 3 rows or 3 columns, whether they are Mythic or not. This effect makes running Wings of Light+ viable even if there are few Mythic heroes on the team, as it provides support to all allies.

In combat, Wings of Light+ grants Seiros Atk/Spd/Def/Res+5, 30% damage reduction on all attacks, and Special cooldown charge acceleration, enhancing her combat potential.

Seiros Weaknesses

Weak to Dragon Effective Weapons and Specials

Seiros takes 1.5x damage from dragon-effective weapons like Falchion, Naga, or Ífingr. One blow from these types of weapons is sure to take her down if the opponent's enemy unit is well invested.

She is also weak to those running Ruptured Sky as their Special, as it deals 40% more damage to her due to her being a dragon.

Make sure you know what weapons you are up against before hopping too far into the line of battle!

Heroes with Effective Skills

Should you Unlock Potential?

Should You Unlock Potential for this Hero?	Cannot Unlock Potential

Seiros - Saint of Legend Only Appears as a 5 Star Hero!

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

Unlock Potential Tier List

Seiros - List of Skills

Weapons

Skill Name	Might	Range	Effect	Learned At
Fire Breath	6	1	No Effect	5★
Fire Breath+	8	1	No Effect	5★
Flametongue	11	1	No Effect	5★
Aurora Breath	16	1	Grants Atk +3. If unit initiates combat, grants Atk+6 to unit during combat and unit makes a guaranteed follow-up attack. If foe initiates combat, grants Def/Res +6 during combat and foe cannot make a follow-up attack. If foe's Range =2, calculates damage using the lower of foe's Def or Res.	5★

Assists

This Hero has no Assist skills that can be learned.

Specials

Skill Name	Effect	Learned At
Chilling Wind	(Cooldown Count = 4) Boosts damage dealt by 50% of unit’s Res.	5★
Glacies	(Cooldown Count = 4) Boosts damage dealt by 80% of unit’s Res.	5★

Passives

Skill Name	Effect	Learned At
Warding Blow 1	Grants Res +2 during combat when unit initiates combat.	5★
Mirror Strike 1	Grants Atk/Res +2 during combat if unit initiates combat.	5★
Mirror Strike 2	Grants Atk/Res +4 during combat if unit initiates combat.	5★
Mirror Impact	If unit initiates combat, grants Atk+6, Res+10 during combat and foe cannot make a follow-up attack.	5★
Atk/Res Scowl 1	If foe initiates combat or foe's HP ≥ 75% at start of combat, grants Atk/Res+2 to unit during combat, and also, if foe's attack can trigger foe's Special and unit's Res ≥ foe's Res+15 during combat, inflicts Special cooldown count+1 on foe before foe's first attack. (Cannot exceed the foe's maximum Special cooldown.)	5★
Atk/Res Scowl 2	If foe initiates combat or foe's HP ≥ 75% at start of combat, grants Atk/Res+4 to unit during combat, and also, if foe's attack can trigger foe's Special and unit's Res ≥ foe's Res+12 during combat, inflicts Special cooldown count+1 on foe before foe's first attack. (Cannot exceed the foe's maximum Special cooldown.)	5★
Atk/Res Scowl 3	If foe initiates combat or foe's HP ≥ 75% at start of combat, grants Atk/Res+6 to unit during combat, and also, if foe's attack can trigger foe's Special and unit's Res ≥ foe's Res+9 during combat, inflicts Special cooldown count+1 on foe before foe's first attack. (Cannot exceed the foe's maximum Special cooldown.)	5★
Atk/Res Scowl 4	If foe initiates combat or foe's HP ≥ 75% at start of combat, grants Atk/Res+7 to unit during combat, and also, if foe's attack can trigger foe's Special and unit's Res ≥ foe's Res +5 during combat, inflicts Special cooldown count+1 on foe before foe's first attack. (Cannot exceed the foe's maximum Special cooldown.)	5★
Dragon Wall 1	If unit's Res > foe's Res, reduces damage from attacks during combat and from area-of-effect Specials (excluding Røkkr area-of-effect Specials) by percentage = difference between stats x 2 (max 20%).	5★
Dragon Wall 2	If unit's Res > foe's Res, reduces damage from attacks during combat and from area-of-effect Specials (excluding Røkkr area-of-effect Specials) by percentage = difference between stats x 3 (max 30%).	5★
Dragon Wall 3	If unit's Res > foe's Res, reduces 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%).	5★
Wings of Light	Grants Atk/Spd/Def/Res+2+X to ally Mythic Heroes during combat in turns 1 through 5 (X = turn number). (Excludes unit.) (Effect only active if team includes three or fewer Mythic Heroes, including unit.)	5★
Wings of Light+	If the number of Mythic Hero allies on team ≤ 3 (including unit), grants Atk/Spd/Def/Res+X (X = turn number + 3; max 8) and "reduces damage from attacks (excluding area-of-effect Specials) by 30%" to Mythic Hero allies (excluding unit) during their combat. Grants Atk/Spd/Def/Res+4 and Special cooldown charge +1 (only highest value applied; does not stack) per attack to allies within 3 rows or 3 columns centered on unit during their combat. If there is a Mythic Hero ally on your team (excluding unit), or if there is an ally within 3 rows or 3 columns centered on unit, grants Atk/Spd/Def/Res+5 to unit, reduces damage from attacks during combat by 30% (excluding area-of-effect Specials), and grants Special cooldown charge +1 to unit per attack during combat (only highest value applied; does not stack).	5★

Seiros as a Source Hero

Value of Skills	★★★★★

Inheriting Mirror Impact, Atk/Res Scowl 4, or Dragon Wall 3

Seiros can be used to inherit Mirror Impact, Atk/Res Scowl 4, or Dragon Wall 3.

Atk/Res Scowl 4 is the ideal skill to acquire when foddering off Seiros copies.

• List of Source Heroes
• The Best Fodder Units

How to Get Seiros / Illustrations / Voice Actor / Quotes

How to Get Seiros

Obtained through a Special Summoning Event!

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

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

Voice Actor and Illustrator Information

Voice Actor (English)	Cherami Leigh
Illustrator	Nishiki Areku
Appears In	Fire Emblem: Three Houses

Illustration

FEH: Related Guides

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Heroes from Legendary Heroes - Elincia: Undaunted Queen
Fallen Chrom [9.5/10]	Legendary Hinoka [9.5/10]	Legendary Elincia [9.0/10]	Seiros [9.0/10]
Gilliam [9.0/10]	Noah [9.0/10]	Dagr [9.0/10]	Legendary Byleth (M) [9.0/10]
Ótr [9.0/10]	Legendary Claude [9.0/10]	Gotoh [9.0/10]	Fallen Maria [9.5/10]

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All Types of Blue Weapons

Close-Range	Ranged
Lance	Blue Tome
Blue Breath	Blue Dagger
Blue Beast	Blue Bow