This is a ranking page for the hero Fomortiis - Dark of Night 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 Winter Fomortiis.

Heroes With the Same Name
Fomortiis	Winter Fomortiis

Special Heroes - Yearning to Give Featured Heroes
Winter Fomortiis [9.5/10]	Winter Alear (M) [9.5/10]	Winter Shez (F) [9.5/10]	Winter Hortensia [9.5/10]

Winter Fomortiis Rating and Basic Information

Fomortiis - Dark of Night: Basic Information

Color / Weapon Type / Move Type	Red / Red Beast / Armored
Rarity	5 Star
What Kind of Character Are They?	・Icy Ravager inflicts Atk/Def penalties on foe, grants Fomortiis bonus true damage, true damage reduction, offensive Tempo, and a Time's Pulse 4 effect. ・Leaden Regrets inflicts Atk/Def penalties on foe, grants Fomortiis 80% damage reduction on follow-up attacks, 50% damage reduction piercing, and forcefully ends turns of nearby foes after combat.

Winter Fomortiis Skills at 5★

Icy Ravager Might: 14　 Range: 1 Accelerates Special trigger (cooldown count-1). At start of turn, and at start of enemy phase (except for in Summoner Duels), if Special cooldown count is at its maximum value, grants Special cooldown count-1. If foe initiates combat or foe's HP ≥ 75% at start of combat, inflicts penalty on foe's Atk/Def = 20% of unit's Def at start of combat + 6, unit deals +X damage (X = total value of the number of foes defeated by unit's team on the current turn and the number of foes that have already performed an action, x 3, + 10; max 19; for "current turn," player phase and enemy phase are counted separately; excluding area-of-effect Specials), reduces damage from foe's attacks by X (excluding area-of-effect Specials), and neutralizes effects that inflict "Special cooldown charge -X" on unit during combat, and also, and if unit's Special cooldown count is at its maximum value after combat, grants Special cooldown count-1 to unit after combat. At strat of turn, if unit is adjacent to only beast or dragon allies or if unit is not adjacent to any ally, unit transforms (otherwise, unit reverts). If unit transforms, grants Atk+2, and unit can counterattack regardless of foe's range.

Aegis Cooldown Count = 3 Reduces damage inflicted by attacks from foes 2 spaces away by 50%.

Leaden Regrets If unit can transform, transformation effects gain "if unit is within 2 spaces of a beast or dragon ally, or if number of adjacent allies other than beast or dragon allies ≤ 2" as a trigger condition (in addition to existing conditions). If defending in Aether Raids, at the start of enemy turn 1, if conditions for transforming are met, unit transforms. If unit is transformed or if foe initiates combat, inflicts Atk/Def-10 on foe, reduces damage from foe's follow-up attack by 80% ("follow-up attack" normally means only the second strike; for effects that grant "unit attacks twice," it means the third and fourth strikes), and reduces the percentage of foe's non-Special "reduce damage by X%" skills by 50% during combat (excluding area-of-effect Specials). If foe initiates combat, after combat, the closest foes within 4 spaces of target who have yet to act have their actions end immediately.

Shield Fighter Inflicts Atk/Spd-4 on foe during combat. If foe's attack can trigger unit's Special, triggers the following effects during combat: grants Special cooldown count-1 to unit before foe's first attack; if foe's first attack triggers the "attacks twice" effect, grants Special cooldown count-1 to unit before foe's second strike as well; grants Special cooldown count-1 to unit before foe's first follow-up attack. If foe's attack triggers unit's Special and Special has the "reduces damage by X%" effect, Special triggers twice, then reduces damage by 7. Each Special trigger is calculated as a separate activation.

A/D Briar F Save If foe with Range = 2 initiates combat against an ally within 2 spaces of unit, triggers 【Savior】 on unit. If foe's Range = 2, grants Atk/Def+4 to unit and reduces damage from foe's first attack by 5 during combat ("first attack" normally means only the first strike; for effects that grant "unit attacks twice," it means the first and second strikes), and unit's next attack deals damage = 40% of foe's attack damage prior to reductions (resets at end of combat; only highest value applied; does not stack).

Winter Fomortiis Best IVs

Recommended IVs

Stat	Superboon/Superbane	IV Recommendation
HP (23)		★★★★★
Atk (12)		★★★★★
Spd (3)		★☆☆☆☆
Def (10)		★★★★★
Res (13)		★★★★☆

◯ = 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.

+Def / -Spd

The best IVs for Winter Fomortiis are +Def and -Spd. Def is a superboon and boosts Fomortiis's Def from base 49 to base 53, improving his tanking capacity. Boosting Def also improves the effect of Icy Ravager's penalties applied to his foe.

+Res is also a good bane if Winter Fomortiis is expected to face off against multiple magical foes, which is common for Far Save tanks.

Winter Fomortiis's Spd is a clear dump stat and can be safely taken as a bane.

+Def for a +10 merge

We recommend +Def when merging Winter Fomortiis up to +10 as it improves his bulk both directly and indirectly through Icy Ravager.

Winter Fomortiis Best Builds

General Use / Budget Winter Fomortiis

HOT
： Icy Ravager ： Swap ： Aegis ： Emblem Marth	： Leaden Regrets ： Shield Fighter ： A/D Briar F Save ： Squad Ace BX 3 ： -
Updated on 12/13/2024

How to Use, Explanation

Winter Fomortiis already comes with Shield Fighter, giving him the optimal kit for Far Save right out of the box. Simply equip a defensive Sacred Seal of your choice. Emblem Marth's ring isn't necessary, but equipping it protects him against brave attacks or Desperation builds by triggering Aegis again.

Source Heroes for All Skills

Winter Fomortiis Stats

Stat Rankings

Neutral Stats at Lv. 40 (5★)
207
HP	49	Rank: 23/1195
Atk	47	Rank: 16/1195
Spd	16	Rank: 1151/1195
Def	49	Rank: 2/1195
Res	46	Rank: 13/1195

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
Níðhöggr	50	49	17	48	43	207
Læraðr	50	48	17	44	48	207
Winter Fomortiis	49	47	16	49	46	207
New Year Níðhöggr	50	48	16	49	44	207
Fomortiis	46	44	15	46	44	195
Fallen Edelgard	45	42	14	44	39	184
Caineghis	47	37	23	37	30	174

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

Winter Fomortiis Roles, Strengths, and Weaknesses

Winter Fomortiis Roles

Fomortiis - Dark of Night 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

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

Winter Fomortiis Strengths

Icy Ravager is loaded with offensive and defensive effects

Winter Fomortiis is equipped with Icy Ravager, a loaded weapon with multiple offensive and defensive effects.

Below is a summary of these effects:

X = 10 + 3x the total value of the number of foes defeated by Fomortiis's team on the current turn and the number of foes that have already performed an action (capped at 19).

Icy Ravager excels during enemy phase where Winter Fomortiis can trigger all of its effects and deal massive damage to his enemies while accelerating his Special to ensure it activates immediately.

Leaden Regrets allows easier transformation and grants defensive effects

Winter Fomortiis also comes with his own exclusive A skill in Leaden Regrets. This skill allows him to easily transform into his beast form by granting additional transformation conditions on top of the default conditions.

Additionally, if Winter Fomortiis is on an Aether Raids defense team, as long as he meets the transformation conditions, he immediately transforms at the start of the map.

In combat, Leaden Regrets inflicts Atk/Def-10 on Fomortiis's foe, grants Fomortiis 80% damage reduction on his foe's follow-up attacks and a 50% damage reduction piercing effect.

Finally, Leaden Regrets forcefully ends the actions of the closest foes within 4 spaces of the foe that attacked Winter Fomortiis, as long as Winter Fomortiis survives combat. This is arguably the most important part of the skill, as it ensures that Fomortiis does not get swarmed by multiple enemies.

Comes with Shield Fighter

Shield Fighter is arguably the most powerful B skill for defensive armored units like Winter Fomortiis, and was a very rare skill to acquire at the time of his release, only found on Ice Tribe Fjorm.

Winter Fomortiis comes with Shield Fighter on his base kit, removing the need for skill inheritance and making him good to go right out of the box.

Shield Fighter works together with Icy Ravager's cooldown reduction effects as well, removing the need to engage with Emblem Marth's ring to trigger Aegis over and over again. This makes Winter Fomortiis one of the best tank units in the entire game, and even allows him to pair up with a second armored unit (of a different Savior build) that equips Emblem Marth's ring and Shield Fighter themselves to create an unbreakable core.

However, Emblem Marth's ring is still his best Emblem ring to equip, as it protects him against common brave effect nukes like Ninja Lucina, or Desperation effect nukes like Brave Bernadetta. Equipping Emblem Marth's ring allows Winter Fomortiis to trigger Aegis repeatedly against these opponents.

Winter Fomortiis Weaknesses

Weak to Armor Effective Weapons

Winter Fomortiis takes 1.5x damage from armor-effective weapons like Randgríðr, and one blow from this type of weapon will deal significant damage. Make sure you know what weapons you are up against before hopping too far into the line of battle!

Weak to Beast Effective Weapons

Winter Fomortiis takes 1.5x damage from beast-effective weapons like Brave Eliwood's Nini's Ice Lance or Picnic Flora's Sæhrímnir, and one blow from this type of weapon will deal significant damage. 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?

Fomortiis - Dark of Night Only Appears as a 5 Star Hero!

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

Unlock Potential Tier List

Winter Fomortiis - List of Skills

Weapons

Skill Name	Might	Range	Effect	Learned At
Whelp (Armored)	4	1	At start of turn, if unit is adjacent to only beast or dragon allies or if unit is not adjacent to any ally, unit transforms (otherwise, unit reverts). If unit transforms, grants Atk+2, and unit can counterattack regardless of foe's range.	5★
Yearling (Armored)	6	1	At start of turn, if unit is adjacent to only beast or dragon allies or if unit is not adjacent to any ally, unit transforms (otherwise, unit reverts). If unit transforms, grants Atk+2, and unit can counterattack regardless of foe's range.	5★
Adult (Armored)	9	1	At start of turn, if unit is adjacent to only beast or dragon allies or if unit is not adjacent to any ally, unit transforms (otherwise, unit reverts). If unit transforms, grants Atk+2, and unit can counterattack regardless of foe's range.	5★
Icy Ravager	14	1	Accelerates Special trigger (cooldown count-1). At start of turn, and at start of enemy phase (except for in Summoner Duels), if Special cooldown count is at its maximum value, grants Special cooldown count-1. If foe initiates combat or foe's HP ≥ 75% at start of combat, inflicts penalty on foe's Atk/Def = 20% of unit's Def at start of combat + 6, unit deals +X damage (X = total value of the number of foes defeated by unit's team on the current turn and the number of foes that have already performed an action, x 3, + 10; max 19; for "current turn," player phase and enemy phase are counted separately; excluding area-of-effect Specials), reduces damage from foe's attacks by X (excluding area-of-effect Specials), and neutralizes effects that inflict "Special cooldown charge -X" on unit during combat, and also, and if unit's Special cooldown count is at its maximum value after combat, grants Special cooldown count-1 to unit after combat. At strat of turn, if unit is adjacent to only beast or dragon allies or if unit is not adjacent to any ally, unit transforms (otherwise, unit reverts). If unit transforms, grants Atk+2, and unit can counterattack regardless of foe's range.	5★

Assists

Specials

Skill Name	Effect	Learned At
Holy Vestments	(Cooldown Count = 3) Reduces damage inflicted by attacks from foes 2 spaces away by 30%.	5★
Aegis	(Cooldown Count = 3) Reduces damage inflicted by attacks from foes 2 spaces away by 50%.	5★

Passives

Skill Name	Effect	Learned At
Leaden Regrets	If unit can transform, transformation effects gain "if unit is within 2 spaces of a beast or dragon ally, or if number of adjacent allies other than beast or dragon allies ≤ 2" as a trigger condition (in addition to existing conditions). If defending in Aether Raids, at the start of enemy turn 1, if conditions for transforming are met, unit transforms. If unit is transformed or if foe initiates combat, inflicts Atk/Def-10 on foe, reduces damage from foe's follow-up attack by 80% ("follow-up attack" normally means only the second strike; for effects that grant "unit attacks twice," it means the third and fourth strikes), and reduces the percentage of foe's non-Special "reduce damage by X%" skills by 50% during combat (excluding area-of-effect Specials). If foe initiates combat, after combat, the closest foes within 4 spaces of target who have yet to act have their actions end immediately.	5★
Hardy Fighter 1	Neutralizes effects that guarantee foe's follow-up attacks during combat. At the start of turn 1, if foe's attack triggers Special, grants Special cooldown count-1. If foe's attack triggers Special and Special has the "reduces damage by X%" effect, Special triggers twice. Each Special trigger is calculated as a separate activation.	5★
Hardy Fighter 2	Neutralizes effects that guarantee foe's follow-up attacks during combat. At the start of turn 1, if foe's attack triggers Special, grants Special cooldown count-1. If foe's attack triggers Special and Special has the "reduces damage by X%" effect, Special triggers twice, then reduces damage by 5. Each Special trigger is calculated as a separate activation.	5★
Hardy Fighter 3	Neutralizes effects that guarantee foe's follow-up attacks during combat. At the start of turn 1, if foe's attack triggers Special, grants Special cooldown count-2. If foe's attack triggers Special and Special has the "reduces damage by X%" effect, Special triggers twice, then reduces damage by 5. Each Special trigger is calculated as a separate activation.	5★
Shield Fighter	Inflicts Atk/Spd-4 on foe during combat. If foe's attack can trigger unit's Special, triggers the following effects during combat: grants Special cooldown count-1 to unit before foe's first attack; if foe's first attack triggers the "attacks twice" effect, grants Special cooldown count-1 to unit before foe's second strike as well; grants Special cooldown count-1 to unit before foe's first follow-up attack. If foe's attack triggers unit's Special and Special has the "reduces damage by X%" effect, Special triggers twice, then reduces damage by 7. Each Special trigger is calculated as a separate activation.	5★
A/D Far Save 1	If a foe uses bow, dagger, magic, or staff and initiates combat against an ally adjacent to unit, triggers【Savior】on unit. If unit triggers Savior, grants Atk/Def+1 during combat. 【Savior】 Unit takes ally’s space, enters combat in ally’s place, and receives all after-combat effects. Doesn't trigger if ally is on terrain that unit can't move to or if multiple units are able to use Savior during the same combat. If Savior triggers, after-combat movement effects don't occur.	5★
A/D Far Save 2	If a foe uses bow, dagger, magic, or staff and initiates combat against an ally with 2 spaces of unit, triggers【Savior】on unit. If unit triggers Savior, grants Atk/Def+2 during combat. 【Savior】 Unit takes ally’s space, enters combat in ally’s place, and receives all after-combat effects. Doesn't trigger if ally is on terrain that unit can't move to or if multiple units are able to use Savior during the same combat. If Savior triggers, after-combat movement effects don't occur.	5★
A/D Far Save 3	If a foe uses bow, dagger, magic, or staff and initiates combat against an ally with 2 spaces of unit, triggers【Savior】on unit. If unit triggers Savior, grants Atk/Def+4 during combat. 【Savior】 Unit takes ally’s space, enters combat in ally’s place, and receives all after-combat effects. Doesn't trigger if ally is on terrain that unit can't move to or if multiple units are able to use Savior during the same combat. If Savior triggers, after-combat movement effects don't occur.	5★
A/D Briar F Save	If foe with Range = 2 initiates combat against an ally within 2 spaces of unit, triggers 【Savior】 on unit. If foe's Range = 2, grants Atk/Def+4 to unit and reduces damage from foe's first attack by 5 during combat ("first attack" normally means only the first strike; for effects that grant "unit attacks twice," it means the first and second strikes), and unit's next attack deals damage = 40% of foe's attack damage prior to reductions (resets at end of combat; only highest value applied; does not stack).	5★

Winter Fomortiis as a Source Hero

Winter Fomortiis comes with Shield Fighter and A/D Briar F Save as inheritable options.

It is possible to acquire both skills with one copy of Winter Fomortiis. However, we recommend inheriting Shield Fighter no matter what, as it is one of the best defensive skills in the entire game.

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How to Get Winter Fomortiis / Illustrations / Voice Actor / Quotes

How to Get Winter Fomortiis

Obtained through a Special Summoning Event!

Winter Fomortiis 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
Yearning to Give Special Heroes Summon	Winter Fomortiis Winter Shez (F) Winter Hortensia Winter Alear (M) Starts：12/12/2024 Ends：01/12/2025

Current Focuses and Which You Should Pull From

Voice Actor and Illustrator Information

Illustration

FEH: Related Guides

Special Heroes: Yearning to Give

Heroes from Special Heroes - Yearning to Give
Winter Fomortiis [9.5/10]	Winter Alear (M) [9.5/10]	Winter Shez (F) [9.5/10]	Winter Hortensia [9.5/10]

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