Name	Cooldown	Description	SP	Required
Astra	4	Boosts damage dealt by 150%.	200	Night Sky
Cannot use:

Notes

• The Special damage boosting effect of Astra can be reduced by damage-reduction effects such as  Archrival,  A/S Rival Break, and  Dodge.
  • Damage boosting effects stack additively, similar to flat damage-reduction effects and interactions related to the weapon-triangle, such as  Triangle Adept and the weapon-triangle advantage boost.
  • A foe equipped with Invincibility Seals will neutralize all sources of damage except from Røkkr area-of-effect Specials and the minimum 1 damage from Umbra Burst weapons.
  • A foe using attack damage preventing effects can neutralize damage dealt from the foe's own attacks and the unit's attacks (Units with Umbra Burst weapons will take and deal the minimum 1 damage).
  • For more information, see Damage calculation.

List of owners

Unit	Skill chain
Anna: Commander	Night Sky 4	Astra 4	–	–
Ash: Divergent Brides	Night Sky 5	Astra 5	Comet 5	–
Ayra: Astra's Wielder	Night Sky 4  SR	Astra 4  SR	Regnal Astra 5	–
Ayra: Supreme Astra	Night Sky 5	Astra 5	Crusader's Astra 5	–
Ayra: Together in Tea	Night Sky 5	Astra 5	Supreme Astra 5	–
Baldr: Celestial Sun God	Night Sky 5	Astra 5	Celestial Form 5	–
Byleth: Of the Academy	Night Sky 5	Astra 5	Goddess Dance 5	–
Canis: Ill Portent	Night Sky 5	Astra 5	Comet 5	–
Celica: Warrior Priestess	Night Sky 4  SR	Astra 4  SR	Galeforce 5	–
Chrom: Fell Exalt	Night Sky 5	Astra 5	Galeforce 5	–
Cordelia: Knight Paragon	Night Sky 3	Astra 4	Galeforce 5	–
Cordelia: Unyielding Snow	Night Sky 4  SR	Astra 4  SR	Galeforce 5	–
Eitr: Spring Sunrise	Night Sky 5	Astra 5	Nimble Beast 5	–
Elm: Retainer to Embla	Night Sky 5	Astra 5	Nimble Beast 5	–
Fir: Dual Warriors	Night Sky 5	Astra 5	Galeforce Mist 5	–
Freyja: Parallel Hearts	Night Sky 5	Astra 5	Comet 5	–
Gaius: Thief Exposed	Night Sky 4  SR	Astra 4  SR	–	–
Hræsvelgr: Quieting Blade	Night Sky 5	Astra 5	Nimble Beast 5	–
Hræsvelgr: Wings of Healing	Night Sky 5	Astra 5	Nimble Beast 5	–
Jamke: Prince of Verdane	Night Sky 3	Astra 4	–	–
Larcei: Bride of Astra	Night Sky 5	Astra 5	Crusader's Astra 5	–
Larcei: Keen Kin	Night Sky 4  SR	Astra 4  SR	Regnal Astra 5	–
Larcei: Scion of Astra	Night Sky 4  SR	Astra 4  SR	Regnal Astra 5	–
Leif: Destined Scions	Night Sky 4  SR	Astra 4  SR	Njörun's Zeal 5	–
Leif: Sworn to Country	Night Sky 5	Astra 5	The True Njörun 5	–
Leif: Unifier of Thracia	Night Sky 5	Astra 5	Njörun's Zeal 5	Njörun's Zeal II 5
Lucina: Of Awakening	Night Sky 5	Astra 5	All for One 5	–
Lute: Limitless Curiosity	Night Sky 5	Astra 5	Comet 5	–
Lyn: Lady of the Plains	Night Sky 4  SR	Astra 4  SR	Galeforce 5	–
Lyn: Of Blazing	Night Sky 5	Astra 5	Astra Storm 5	–
Lyn: Plains Wind	Night Sky 5	Astra 5	Nimble Beast 5	–
Lyon: Twilight Amends	Night Sky 5	Astra 5	Comet 5	–
Mareeta: Astra Awakened	Night Sky 4  SR	Astra 4  SR	Vital Astra 5	–
Mia: Zenith Challenger	Night Sky 5	Astra 5	Celestial Form 5	–
Nerþuz: Divine Abundance	Night Sky 5	Astra 5	Galeforce Mist 5	–
Nerþuz: God of the Land	Night Sky 5	Astra 5	Galeforce 5	–
Panne: Proud Taguel	Night Sky 3	Astra 4	–	–
Ranulf: Considerate Gaze	Night Sky 4	Astra 4	–	–
Roy: Brave Lion	Night Sky 4  SR	Astra 4  SR	Galeforce 5	–
Ryoma: Peerless Samurai	Night Sky 4  SR	Astra 4  SR	–	–
Scáthach: Astra's Wake	Night Sky 3	Astra 4	–	–
Shannan: Wielder of Astra	Night Sky 4  SR	Astra 4  SR	Imperial Astra 5	–
Shez: Covert Mercenary	Night Sky 5	Astra 5	Comet 5	–
Tibarn: Shipless Pirate	Night Sky 4  SR	Astra 4  SR	Galeforce 5	–
Timerra: Trick or Meat	Night Sky 5	Astra 5	Vital Astra 5	–
Virion: Elite Archer	Night Sky 3	Astra 4	–	–
Yarne: Hoppy New Year	Night Sky 4	Astra 4	Galeforce 5	–
Yarne: Timid Taguel	Night Sky 4  SR	Astra 4  SR	Galeforce 5	–
Yarne: Trick or Taguel	Night Sky 4	Astra 4	Galeforce 5	–
Yen'fay: Blade Legend	Night Sky 3	Astra 4	–	–
Zihark: Ninja Blademaster	Night Sky 4	Astra 4	–	–

*  Alfonse: Prince of Askr,  Sharena: Princess of Askr,  Anna: Commander, and  Forma units cannot be used for skill inheritance or turned into combat manuals.
**  Rearmed and  Attuned Heroes cannot be used for normal skill inheritance or turned into combat manuals after using their Arcane/Elite Inheritance unless their Arcane/Elite Inheritance is restored via merges.

Trivia

• Astra's cooldown was reduced by 1 with Version 2.0.0, released on November 28th, 2017.

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