Fire Emblem Wiki
Register
Advertisement
Fire Emblem Wiki

“A powerful blade, and regalia of House Archanea.”
—In-game description, Shadow Dragon

Mercurius is a legendary Sword that appears in the Archanea Series of the Fire Emblem franchise, alongside Fire Emblem Awakening. One of three Regalia weapons of Archanea, this sword serves as the counterpart to the Gradivus lance and the Parthia bow. Taking its roots from an unidentified origin, this sword was purloined by the enigmatic thief Adrah, where it played a pivotal role in his crusade of conquering the continent of Archanea. Upon the formation of the Kingdom of Archanea, Mercurius was bequeathed the honorific of being one of three hallowed Regalia weapons, and subsequently passed down through generations of Archanean royalty.

During the War of Shadows that occurs in Shadow Dragon and the Blade of Light, Book 1 of Mystery of the Emblem and their remakes, this sword is stolen by the invading Grustian troops. Est, upon learning of the vexing fact, then embarks on a mission to recover it, and thereafter passes it into the possession of Marth's army after rejoining it. The sword is then returned to the vaults of House Archanea, where it is ceded upon Astram when he assumes the role of the captain of the newly-assembled Archanean Free Company.

During the War of Heroes that takes place in the sequel and its remake, the Mercurius blade is observed to be the primary weapon wielded by Astram in Chapter 16, where he is convinced by Jeorge to defect to Marth's army, in accordance to his loyalty to Nyna and his desire to live for Midia's sake.

In Shadow Dragon and the Blade of Light, the Mercurius is referred to as the Mericle Rapier by Nyna at the end of Chapter 12, that which may explain why it is only usable by Marth. This is, however, rectified in the later games, where the sword can be equipped by any sword-wielder with a sufficient Weapon Level.

Weapon Stats[]

Fire Emblem: Shadow Dragon and the Blade of Light[]

Name Type

Mercurius

Sword

WLv Uses Mt Hit Crt Rng Wt Worth
- 24 18 100% 10% 1 1 -
Effect

Marth-only; gives Marth a 25% chance to gain 2 points instead of 1 when a stat increases during a Level-Up.

Fire Emblem: Mystery of the Emblem[]

Name Type

Miracle Sword FE3 Mercurius

Sword

WLv Uses Mt Hit Crt Rng Wt Worth
12 24 20 100% 0% 1 4 24,000
Effect

Doubles experience gain.

Fire Emblem: Shadow Dragon[]

Name Type

Mercurius Mercurius

FE12 Sword Sword

Rank Uses Mt Hit Crt Rng Wt WEx Worth
A 20 18 100% 10% 1 8 2 -
Effect

-

Fire Emblem: New Mystery of the Emblem[]

Name Type

Mercurius Mercurius

FE12 Sword Sword

Rank Uses Mt Hit Crt Rng WEx Worth
A 20 18 100% 10% 1 2 0
Effect

-

Fire Emblem Awakening[]

Name Type

Mercurius FE13 Icon Mercurius

Sword

Rank Uses Mt Hit Crt Rng WEx Worth
A 25 17 95% 5% 1 ? 0
Effect

-

Fire Emblem Echoes: Shadows of Valentia[]

Name Type

Echoes mercurius icon Mercurius

Echoes sword weapon type icon Sword

Mt Hit Crt Rng Wt
11 80% 0 1 2
Effect

Teaches Echoes Sword Skill icon Recovery

Forging
Silver mark icon Golden mark icon Mt Hit Crt Wt
1 2 +1 +10 -1

Fire Emblem: Three Houses[]

“A legendary sword with high hit rate and might, used in the War of the Eagle and Lion.”
—In-game description, Three Houses
Name Type

FE16 Sword Weapon Icon Mercurius

FE16 sword icon Sword

Rank Uses Mt Hit Crt Rng WEx Wt Worth
A 40 15 100% 10% 1 ? 7 -
Effect

-

Fire Emblem Engage[]

Name Type

MercuriusFE17Sprite Mercurius

FE17 Sword Sword

Rank Uses Mt Hit Crt Wt Rng Worth
D 12 80 0% 7 1 100
Effect

Engage Weapon. Sword wielded by Emblem Marth. Doubles user's earned experience.

Fire Emblem Heroes[]

Name Type

Mercurius

FEH Sword Sword

Mt Rng SP Rarity
16 1 400 FEH Star Rarity 5
Effect

Grants Atk+3. At start of turn, if unit's HP ≥ 50%, grants Atk/Spd/Def/Res+4 to unit and sword, lance, axe, bow, dagger, or beast allies within 2 spaces for 1 turn. (Bonus granted to unit even if no allies are within 2 spaces.)

Item Locations[]

Fire Emblem: Shadow Dragon and the Blade of Light[]

Method Location
Dropped Est (Ch. 18)
Inventory Est

Fire Emblem: Mystery of the Emblem[]

Method Location
Inventories Book 1: Est
Book 2: Astram

Fire Emblem: Shadow Dragon[]

Method Location
Inventory Est

Fire Emblem: New Mystery of the Emblem[]

Method Location
Inventory Astram

Fire Emblem Awakening[]

Method Location
Treasure Xeno. 15 - Random from Chest.
Bonus Item Can be claimed as a prize from the bonus box upon accumulating 3,000 Renown points.

Fire Emblem Warriors: Three Hopes[]

Method Location
Survey Point Mine Survey Spot in Southern Essar Territory in Chapter 11 of Azure Gleam. Initial form is an A Rank Rusted Sword. Choose between this or an A Rank Rusted Lance.

Etymology[]

The sword's name is derived from Saint Mercurius, a Christian martyr whose name essentially carries the meaning "wielder of two swords". According to historical scriptures, the second sword that he wielded was a gift bequeathed upon him by the Archangel Michael.

It could also refer to Mercury, the Roman God of thieves, messages, and travel, possibly in reference to the sword being famously wielded by a thief.

Trivia[]

  • Mercurius' in-game model in Echoes: Shadows of Valentia is based on its appearance in the Fire Emblem Museum.
    • There are small notable changes in its appearance, however.
  • In Echoes: Shadows of Valentia, it is possible to acquire an additional Mercurius from upgrading a Blessed Sword.
    • It is unknown if this was how the original Three Regalia were created, or if it was simply a gameplay mechanic.

Gallery[]

Advertisement