In Norse mythology, Mjölnir (Old Norse: "Mjǫllnir" - “Lightning” or “That which smashes”) is the hammer of Thor, the god of thunder and lightning. Forged by the dwarven brothers Brokkr and Eitri, Mjölnir is the most feared weapon in the Nine Realms, capable of leveling entire mountains with only one hit. Mjölnir was also a symbol of both fertility and destruction, and was thought to possess regenerative healing powers. 