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Reason (理学 Rigaku) is a magical weapon skill introduced in Fire Emblem: Three Houses. Combat with these weapons involve fighting enemies using various spells. Sharpening Reason unlocks Reason Prowess.

OverviewEdit

Reason is the skill stat that governs the growth of a unit's offensive magic moveset, and as such, Reason acts as the combination of Anima magic (known in Fódlan as black magic) and dark magic. All Dark Reason magic have an idiosyncratic naming scheme where it includes a capitalized Greek letter after the name of the spell.

Similar to Fire Emblem Gaiden and its remake, every character in Three Houses has a fixed spell list that they learn & use as they improve their Reason weapon stat via tutoring or by participating in live combat as either a combatant or as an adjutant while having a black/dark spell equipped; e.g., all Byleths between players will always used the same spell list, as would other characters such as Shamir or Dorothea. Rather than having to buy tomes like in most previous titles or having an HP cost as it was in the Valentian games, every spell has a set number of usage per map. Characters replenish their spell count between maps. Certain magical classes can increase the number of usages of certain spells.

Annette has the Crest of Dominic, which allows her to occasionally conserve spell charges, allowing her to cast Reason Magic without consuming a use if it activates, which is also the case for Constance and her Crest of Noa. Lysithea and Lorenz have the Crest of Gloucester, raising the Mt of their Reason attacks when it activates, which is also the same power as the Crest of Macuil, though no one else in history beyond the Saint himself has had a Crest of Macuil.

List of learnable Black MagicEdit

Name Mt Hit Crit Range Wt Lvl Use Description User(s)
Fire 3 90 0 1-2 3 E 10 Basic fire magic. Byleth, Edelgard, Ferdinand, Caspar, Linhardt, Dedue, Mercedes, Sylvain, Lorenz, Raphael, Leonie, Rhea, Flayn, Catherine, Alois, Anna, Balthus, Constance
Bolganone 8 85 0 1~2 6 C 5 Advanced fire magic. Byleth, Edelgard, Ferdinand, Caspar, Linhardt, Dedue, Mercedes, Sylvain, Raphael, Leonie, Rhea, Manuela, Seteth, Catherine, Alois, Balthus
Ragnarok 15 80 5 1~2 9 B 3 The highest tier of fire magic. Byleth, Dedue, Mercedes, Sylvain, Lorenz, Leonie, Rhea, Hanneman, Catherine, Balthus
Thunder 4 80 5 1-2 4 E 8 Basic lightning magic. Byleth, Dimitri, Dorothea, Ferdinand, Bernadetta, Felix, Mercedes, Hilda, Manuela, Gilbert, Jeritza, Anna
Thoron 9 75 10 1~3 7 C 4 Advanced thunder magic. Dimitri, Dorothea, Ferdinand, Bernadetta, Felix, Ingrid, Hilda, Marianne, Hanneman, Gilbert, Jeritza
Bolting 12 65 15 3~10 18 B 2 The highest tier of lightning magic.
Cannot trigger follow-up attacks.
Hilda, Manuela, Constance
Wind 2 100 10 1-2 2 E 6 Basic wind magic. Claude, Petra, Linhardt, Ashe, Annette, Hanneman, Seteth, Flayn, Shamir, Cyril, Yuri
Cutting Gale 7 95 10 1-2 5 C 6 Advanced wind magic. Claude, Linhardt, Ashe, Annette, Ignatz, Marianne, Seteth, Flayn, Cyril, Yuri
Excalibur 11 100 15 1~2 8 B 4 The highest tier of wind magic.
Effective against Flying foes.
Claude, Linhardt, Annette, Seteth, Flayn, Yuri
Blizzard 3 70 15 1~2 4 E 10 Basic ice magic. Bernadetta, Ingrid, Ignatz, Marianne, Shamir
Fimbulvetr 12 65 25 1~2 10 B 3 Advanced ice magic. Bernadetta, Ingrid, Ignatz, Marianne, Shamir, Constance
Sagittae 7 90 5 1-2 6 C 10 Magic arrows with a high Hit. Claude, Dorothea, Petra, Annette, Sylvain, Lorenz, Hanneman, Shamir, Yuri, Constance
Meteor 10 80 0 3~10 19 B 1 Magic that also hits targets adjacent to the point of impact.
Cannot make follow-up attacks.
Dorothea, Hanneman, Anna
Agnea's Arrow 16 70 5 1~2 13 A 2 The most powerful form of black magic. A sweltering flame that reduces all to ash. Dorothea, Lorenz, Rhea, Constance

List of learnable Dark MagicEdit

Name Mt Hit Crit Range Wt Lvl Use Description User(s)
Miasma Δ* 5 80 0 1~2 5 E 10 Basic dark magic. Hubert, Lysithea, Hapi
Mire Β* 3 70 0 1~3 5 E 8 Basic dark magic.
Inflicts Def -5 to foe for 1 turn.
Hubert
Swarm Ζ* 4 70 0 1~2 4 E 8 Basic dark magic.
Inflicts Spd -5 to foe for 1 turn.
Lysithea, Hapi
Banshee Θ* 9 75 5 1~2 9 C 5 Intermediate dark magic.
Inflicts reduced Mov to foe for 1 turn.
Hubert, Hapi
Luna Λ* 1 65 0 1~2 7 C 2 Intermediate dark magic.
Ignores enemy Res. Cannot make follow-up attacks.
Edelgard, Lysithea
Death Γ* 6 70 20 1~3 8 B 4 Intermediate dark magic.
Has a high Crit rate.
Hubert, Jeritza, Hapi
Dark Spikes T* 13 80 0 1~2 11 B 3 Advanced dark magic.
Effective against cavalry.
Hubert, Lysithea
Hades Ω* 18 65 10 1~2 16 A 2 Advanced dark magic. Calls on the morbid might of the underworld. Edelgard, Lysithea, Hapi

List of enemy-only Dark MagicEdit

Name Mt Hit Crit Range Wt Lvl Use Description User(s)
Bohr Χ* 10 60 0 3~10 20 B 3 The highest tier of dark magic.
Foes hit are left with 1 HP. Cannot make follow-up attacks.
Myson
Quake Σ* 8 50 0 All 20 B 1 The highest tier of dark magic.
Damages all units except Flying. Cannot trigger follow-up attacks.
Thales

Trivia Edit

  • Constance is the only unit to learn Fimbulvetr without also learning Blizzard.


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