The Mjölnir (トールハンマー Tōru hanmā, translated Thor Hammer in the Fire Emblem Museum and Torhammer in Fire Emblem Treasure) is one of twelve holy weapons from Fire Emblem: Genealogy of the Holy War and a Tome from Fire Emblem: Awakening. Mjölnir is the tome that was used by the Crusader Tordo, bestowed upon him by an unnamed dragon of yore.
In the events of Genealogy of the Holy War, this tome is the Holy Weapon of Grannvale's House Freege. Primarily wielded by Reptor, Bloom and Ishtar, the player will encounter this spell a grand total of five times, which may prove to be lethal in nature, owing to the hefty bonuses that it bestows upon its user. This tome is neither obtainable nor usable by the player, as a result of it not being dropped by any enemy units in the game, alongside the fact that no playable character possesses the prerequisite to equip it (Major Tordo Blood).
According to Norse Mythology, Thor is the god of thunder, and is commonly depicted as a sentient being wielding the Mjöllnir hammer in artwork pieces. Upon being thrown at a given target, he Mjöllnir hammer is said to be able to return into the hands of its user.