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Straight from the story of Book V, Mythic Hero Reginn: Bearing Hope from the Fire Emblem Heroes game, as well as Selena: Fluorspar, Duessel: Obsidian, and Natasha: Sacred Healer from the Fire Emblem: The Sacred Stones game, are available as part of a 5★ summoning focus!
There are new story maps to start a new adventure in Book V, Chapter 1: Machine Dominion and Chapter 2: Kingsbrother—and there are some limited-time quests too! There's even a Log-In Bonus where you can get Orbs up to 10 times until !
Notes:
・ When you finish a summoning session after having summoned a total of 40 or more times in this summoning event, you will be able to choose one 5★ focus Hero to summon for free for your next summon by tapping the Free 5★ Summon button.
・ Reginn: Bearing Hope will join your barracks if you clear Book V, Chapter 1: Part 5 of the main story on Normal difficulty. She will also appear in the Legendary Heroes summoning event scheduled for the end of December.
Tap More for additional information about this event.
• Heroes with different illustrations and epithets are treated as different Heroes even if they are the same character. As such, you cannot use them with Merge Allies.
• This summoning event's 5★ category does not include the 5★ focus Heroes who appear in Weekly Revival summoning events.
• To view summoning details, you can tap on List of Heroes at the bottom of the related notification message or tap on Appearance Rates in the Summon menu.
Learning Skills
• You can help Heroes learn skills by going to Allies, then Ally Growth, and then Learn Skills.
• Some skills can only be learned after raising a Hero's ★ rating.
・ The Free 5★ Summon will appear after 40 summons in the event regardless of whether or not those 40 summons include any of the 4★ or 5★ focus Heroes.
・ The Free 5★ Summon is available once per New Heroes summoning event.
・ Your 5★ focus appearance rate will not reset when you summon the 5★ Hero of your choice from the Free 5★ Summon.
Notes:
・ This summoning event includes a 4★ focus category with an initial appearance rate of 3%. Natasha: Sacred Healer is also available as part of this 4★ focus category. Your 5★ and 5★ focus appearance rates will not reset if you summon this Hero at 4★ rarity.
・ The Appearance Rate reset system is being updated for this and future summoning events. Check the notification entitled Feh Channel Supplement: Regarding Summoning Event Appearance Rates for more information.
Stepsister of Niðavellir's king, Fáfnir.
Chooses to work together with Askr
to stop her suddenly changing brother.
Mythic Effect: Astra
Boost: HP+5, Atk+3
Grants allies this Mythic Effect during Astra
season, if the Astra blessing has been conferred
and if this unit enters battle in Aether Raids with
them: Astra-blessed allies boost the Aetheric
Lift acquired for successful attacks during Astra
season. (This boost is limited to the number of
Mythic Heroes × the number of Heroes with the
blessing conferred × 10.)
During Astra season, this Mythic Hero will
boost Aetheric Lift acquisition for successful
attacks depending on number of merges. (This
boost is limited to the number of times the unit
has been merged × 1.)
Mythic Effect 2: Astra
Boost: Raiding Party Bonus
(Details can be found in Edit Raiding Parties.)
Skills learnable at 5★:
Lyngheiðr
Mt: 16 Range: 1
Grants Spd+3. Enables【Canto (３)】during turns
1 through 4. If unit initiates combat, grants
Atk/Spd+6 during combat and reduces damage
from foe's first attack by 30%.
【Canto (３)】
After an attack, Assist skill, or structure
destruction, unit can move ３ space(s).
(Unit moves according to movement type. Once
per turn. Cannot attack or assist. Only highest
value applied. Does not stack. After moving,
if a skill that grants another action would be
triggered (like with Galeforce), Canto will
trigger again. Unit's base movement has no
effect on movement granted. Cannot warp
(using skills like Wings of Mercy) a distance
greater than ３ space(s).)
This skill can only be equipped by its original unit.
Seiðr Shell
Cooldown: 3
At the start of turn 1, grants Special cooldown
count-3 to unit. Boosts damage by 15 and
calculates damage using the lower of foe's
Def or Res.
This skill can only be equipped by its original unit.
Swift Sparrow 3
If unit initiates combat, grants Atk+6, Spd+7
during combat.
Cannot use: 
Lull Spd/Def 3
Inflicts Spd/Def-3 on foe and neutralizes foe's
bonuses to Spd/Def (from skills like Fortify,
Rally, etc.) during combat.
Cannot use: 
Panic Smoke 3
Inflicts【Panic】on target and foes
within 2 spaces of target after combat.
【Panic】
Converts bonuses on target into penalties
through its next action.
Cannot use:
"I'm Reginn! I'm here to help, and that is exactly what I'll do. Pretty soon you and I will be full-on friends!"
Commoner from out of a desolate village who
used her magic ability to become the Fluorspar
of the Imperial Three. Appears in Fire Emblem:
The Sacred Stones.
Skills learnable at 5★:
Tome of Storms
Mt: 14 Range: 2
Grants Spd+3. At start of combat, if foe's
HP ≥ 75%, grants Atk/Spd+5 to unit during
combat and neutralizes effects that guarantee
foe's follow-up attacks and effects that prevent
unit's follow-up attacks during combat.
This skill can only be equipped by its original unit.
Rally Atk/Res+
Range: 1
Grants Atk/Res+6 to target ally for 1 turn.
Cannot use:
Life and Death 4
Grants Atk/Spd+7.
Inflicts Def/Res-5.
Cannot use:
Atk/Res Ruse 3
If a Rally Assist skill is used by unit or targets
unit, inflicts Atk/Res-5 and【Guard】on
foes in cardinal directions of unit and target
through their next actions.
【Guard】
Inflicts Special cooldown charge -1 on target
per attack during combat through its next action.
(Only highest value applied. Does not stack.)
Cannot use:
"Ever since His Majesty bestowed the gift of the title Fluorspar on me, I've given everything I have as his general."
One of Grado's oldest generals, he is known
as the Obsidian, one of the Imperial Three.
Appears in Fire Emblem: The Sacred Stones.
Skills learnable at 5★:
Obsidian Lance
Mt: 16 Range: 1
Grants Def+3. If unit is not adjacent to an ally,
inflicts Atk/Def-6 on foe during combat and
unit makes a guaranteed follow-up attack.
This skill can only be equipped by its original unit.
Bonfire
Cooldown: 3
Boosts damage by 50% of unit's Def.
Cannot use:
Def/Res Solo 4
If unit is not adjacent to an ally, grants
Def/Res+7 during combat.
Lull Atk/Def 3
Inflicts Atk/Def-3 on foe and neutralizes foe's
bonuses to Atk/Def (from skills like Fortify,
Rally, etc.) during combat.
Cannot use:
Rouse Def/Res 3
At start of turn, if unit is not adjacent to an ally,
grants Def/Res+6 to unit for 1 turn.
Cannot use:
"The strength of Obsidian has not waned since His Majesty, Emperor Vigarde, bestowed the honor on me."
A gentle cleric from Grado, and a woman
of beauty and grace. Appears in Fire Emblem:
The Sacred Stones.
Skills learnable at 5★:
Absorb+
Mt: 7 Range: 2
Restores HP = 50% of damage dealt.
After combat, if unit attacked, restores
7 HP to allies within 2 spaces of unit.
Martyr+
Range: 1
Restores HP = damage dealt to unit +50%
of Atk. (Minimum of 7 HP.) Restores HP to
unit = half damage dealt to unit.
This skill can only be equipped by staff users.
Heavenly Light
Cooldown: 2
When healing an ally with a staff, restores 10 HP
to all allies.
This skill can only be equipped by staff users.
HP/Res 2
Grants HP+4, Res+2.
Close Guard 3
Allies within 2 spaces gain: "If foe uses sword,
lance, axe, dragonstone, or beast damage,
grants Def/Res+4 during combat."
"I am Natasha, a cleric from Grado. I have little skill beyond prayer, but if I can help in any way, I will."
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