Killing Streak

In the Frost Death Knight talent tree, Killing Streak sits in the Frost specialization talents, row 10 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 Killing Streak from Obliteration.

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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.

Same row

Also on this row: The Long Winter, Frostbane and Breath of Sindragosa.

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  The Long Winter

  While Pillar of Frost is active your auto-attack critical strikes increase its duration by 1 sec, up to a maximum of 4 sec.

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  Frostbane

  Each foe struck with Glacial Advance has a chance to transform your next Frost Strike into Frostbane. The chance increases with the number of Razorice stacks on the target. Start a frozen onslaught that strikes twice, unleashing the chilling essence of winter, dealing (72% of Attack Power) Frost damage to all enemies caught in its wake with each strike. Each enemy struck reduces the damage dealt to the next foe by 5%, down to 40%.

• 
  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.