Magni

"Might." The son of Thor by the giantess Járnsaxa, according to Snorri Sturluson in Skáldskaparmál. When Thor killed Hrungnir in a duel, the giant fell forward upon Thor, so that his foot lay over Thor's neck. None of the Æsir was able to free him, until Magni came up. Although he was only three nights old, he easily cast Hrungnir's foot off Thor, and said to him: See how ill it is, father, that I came so late: I had struck this giant dead with my fist, methinks, if I had met with him. Thor rewarded his son with Hrungnir's horse Gullfaxi.

The giant Vafþrúðnir says in Vafþrúðnismál that Magni and Móði shall inherit Thor's hammer Mjöllnir after Ragnarök and shall strive to end warfare and killing.

A Thor kenning is Magni's Sire, found in Hárbarðsljóð and in a verse by Eilífr Goðrúnarson.

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