Mjolnir (the hammer of the gods)
Thor and Loki were the sons of Asgardian god Odin, Asgard had many beautiful the most beautiful of which were the golden boat and the diamond cup. Two other Demigods visited them named Incaz and Demas ,Loki struck a bargain with Demas that he could not produce anything more beautiful than the golden boat and diamond cup, betting that if they could,the price was his head. Demas agreed and set to work on the object. He used Asgardian magic to make replications of the boat and the cup then collected all the 7000 elements , mixed them together and hammered the compound on a star. His brother Incaz was working the bellows and he told him to continue working it till he returned. Thor disguised as a fly and bit Incaz on the thigh but Incaz didn't stop working. Thor disguised as a fly and again bit him deeper on the arm but he still continued. Next Thor bit him much deeper on the neck drawing blood, so he stopped nd cleaned the blood. When Demas returned,the handle of the tool was too short for two hands and the tool was a hammer which possessed magic, could control weather elements and could grant the wielder power,Loki lost the bet and managed to escape death by asserting that in order to get his head, they had to cut his neck which was not part of the deal. Thor was given the hammer for his impartiality and he named it MJOLNIR!!!