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The Hyldnir are a small faction of frost vrykul living primarily in Brunnhildar Village in the Storm Peaks. They are constantly warring with the Sons of Hodir in the name of . They have a strict matriarchal society with the males, both hyldnir and other races, being used as manual labour, mostly in the nearby Forlorn Mine. Even females not of their faction are regarded with more respect then any man. Most, if not all, female members of the are warriors and train to compete in the Hyldsmeet, a competition in which warriors gith to determine who shall rule by 's side and ultimately climaxing in .
They are the servants of , a keeper of Ulduar. In these times, the Hyldnir were the allies of the ice giants. That ended when Thorim's wife, , was slain by , Thorim's brother. A war between the Hyldnir and the Sons of Hodir started after Thorim brutally attacked the ice giants that were framed for the death of . Thorim exiled himself to Temple of Storms in grief.
Betrayal of Valkyrion
The Scourge has sent three emissaries and they were all dismembered. However, in the village of Valkyrion, the Hyldnir there, led by , accepted the rule of the in exchange for the power to become val'kyr. They capture proto-drakes and their eggs and transform him into plagued proto-drakes. This act marked the beginning of the war between former sisters.
The crone's bargain
Some time after, a raid of Hyldnir captured some male goblins of the K3 expedition, leaving the females. Most of them are rescued, except for . Trying to rescue him, the player finds a female vrykul prisoner, Lok'lira. She will help get Zeev back, if the player helps her escape. She grant the player a Hyldnir illusion that allows the player to confront and free Zeev.
- Main article: Hyldsmeet
Lok'lira wants Thorim to break out of his stupor and rally his allies to retake Ulduar. She tells the player that they have entered the Hyldsmeet. The Hyldnir competition to decide the Thorim's next wife. The player later wins the Hyldsmeet and goes to meet Thorim.
The Secret of Ulduar
is now an illusion of used to control . After Thorim is brought to reason, she transforms into a tentacle.
The Hyldnir raid in Northrend to turn the males of the other races into slaves. Thereby, a lot of male vrykul work in Forlorn Mine under the watch of .. They work the slaves very hard, often killing them when there is opposition. The leaders of rebellions are killed without pity.
For flying mounts, they mount blue proto-drakes.
|(presumably)||'s former wife||Deceased||Ulduar, The Clash of Thunder|
|Betrayer of her people||Killable||Valkyrion|
|Arbiter of Hyldsmeet||Alive||Brunnhildar Village|
|Challenger of the Hyldsmeet||Killable (WoW) Deceased (Lore)||Brunnhildar Village|
|Controls the Forlorn Mine||Alive||Brunnhildar Village|
|Overseer of the battle against the Sons of Hodir||Alive||Brunnhildar Village|
|Overseer of the third test of the Hyldsmeet||Alive||Brunnhildar Village|
|Winner of the Hyldsmeet and challenger for the ascension at Valhalas||Killable (WoW) Deceased (Lore)||Icecrown|
The Hyldnir are much like amazons, as they are warrior-women who hate men and use them for slaves.