Hyperpyrexia

In the Frost Death Knight talent tree, Hyperpyrexia sits in the Frost specialization talents, row 9 of 11. It is a single-point node. Its row opens once 20 points are spent in Frost Talents.

Connected above

The tree draws a line into Hyperpyrexia from Icebreaker.

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  Icebreaker2 ranks

  When empowered by Rime, Howling Blast deals 30% increased damage to your primary target.

Connected below

Hyperpyrexia leads on to Breath of Sindragosa.

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  Breath of Sindragosa

  Call upon Sindragosa's aid in battle for 8 sec, continuously dealing Frost damage every 1 sec to enemies in a cone in front of you. Deals reduced damage to secondary targets. Grants a charge of Empower Rune Weapon at the start and 2 Runes at the end.

Same row

Also on this row: Obliteration, Icy Death Torrent and Shattering Blade.

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  Obliteration

  During Pillar of Frost, Frost Strike, Glacial Advance, and Howling Blast always grant Killing Machine and have a 20% chance to generate a Rune. Additionally during Pillar of Frost, Empower Rune Weapon causes your next Obliterate or Frostscythe to cost no Runes.

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  Icy Death Torrent

  Your auto attack critical strikes have a chance to send out a torrent of ice dealing (140% of Attack Power) Frost damage to enemies in front of you.

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  Shattering Blade

  Frostbane consumes the Razorice on your main target to deal an additional 300% damage.