The Aesir-Vanir War
The Æsir–Vanir War was a conflict between two groups of deities that ultimately resulted in the unification of the Æsir and the Vanir into a single pantheon.
History[]
Background[]
The Vanir were another tribe of Norse gods on par with the Æsir, but what they had that the Æsir lacked was magic. In fact, they were the greatest wielders of Seiðr magic, a form of magic principally concerned with discerning and altering the course of destiny. Out of the bramble gods, the goddess Freya was always the foremost practitioner of the art of seidr. But this only served to paint her as a target for the Æsir, especially Odin who longed to attain the knowledge pertaining to his doom in Ragnarök and sought means of forestalling it. Freyja was quite proud of her gifts and wandered from town to town plying her craft for hire. When her gifts caught the all-seeing eye of Odin, he invited her to Asgard, attending the halls of the Æsir under the name Heiðr (“Bright”).
When she presented herself before the Æsir, she revealed her Seiðr magic before them and understandably were quite taken by her powers, so much that they zealously sought her services. But soon they realized that their values of honor, kin loyalty, and obedience to the law were being pushed aside by the selfish desires they sought to fulfill with the goddess' magic. Blaming Freyja for their own shortcomings, the Æsir labeled her as “Gullveig” and attempted to murder her. Three times they tried to burn her, and three times she was reborn from the ashes.
Æsir-Vanir War[]
This was a violation of hospitality when entering another's home under invitation, and the Aesir and Vanir came to hate and fear one another with these hostilities erupted into war. The Aesir led by Odin fought by the rules of plain combat, with weapons and brute force, while the Vanir led by Njord defended their land by using the subtler means of magic and the battle turned to a stalemate, both sides having devastated each other's lands. The war went on for some time, with both sides gaining the upper hand by turns.
Frigg, the wife of Odin, came up with the solution to her husband where they make an accommodation or a truce with the Vanir as a means of attaining knowledge over seiðr magic through non-violent means. As the two tribes of divinities became weary of fighting, the Vanir were requested to attend a Thing with the Æsir and decided to call a truce. As was customary among the ancient Norse and other Germanic peoples, the two sides agreed to pay tribute to each other by sending hostages to live among the other tribe. Freya, Freyr, and Njord of the Vanir went to the Aesir, and Hoenir and Mímir went to the Vanir.
However, one of the exchanges went awry and resulted in the Vanir decapitating one of the hostages sent to them by the Æsir, Mímir. Rather than renewing their hostilities over this tragic misunderstanding, each of the Aesir and Vanir came together and spat into a cauldron. From their saliva they created Kvasir, the wisest of all beings, as a way of pledging sustained harmony.