Murderous Efficiency

In the Frost Death Knight talent tree, Murderous Efficiency sits in the Frost specialization talents, row 6 of 11. It is a single-point node. Its row opens once 8 points are spent in Frost Talents.

Connected above

The tree draws a line into Murderous Efficiency from Arctic Assault, Frostreaper and Inexorable Assault.

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  Arctic Assault

  Consuming Killing Machine fires a Glacial Advance through your target at 60% effectiveness.

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  Frostreaper

  Obliterate deals 10% increased damage and has a chance to tether the souls of its target and a nearby enemy to yours. Frost Strike severs the tethers, dealing (411.8% of Attack Power) Shadowfrost damage to both foes.

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  Inexorable Assault

  Obliterate and Frostscythe consume up to 3 stacks, dealing an additional (26.3% of Attack Power) Frost damage for each stack consumed.

Connected below

Murderous Efficiency leads on to Howling Blades and Cryogenic Chamber.

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  Howling Blades

  Rime empowered Howling Blast unleashes 2 icy blades at its target that deal (25.2% of Attack Power) Frost damage and have 15% chance to grant Killing Machine.

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  Cryogenic Chamber

  When Howling Blast consumes Rime, 15% of the damage it deals is gathered into the next cast of Remorseless Winter, up to 20 times.

Same row

Also on this row: Rage of the Frozen Champion, Enduring Strength, Frozen Dominion and Frigid Executioner.

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  Rage of the Frozen Champion

  Frost Strike and Glacial Advance have a 15% increased chance to trigger Rime and Howling Blast generates 8 Runic Power while Rime is active.

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  Enduring Strength

  When Pillar of Frost expires, your Strength is increased by 8% for 6 sec. This effect lasts 2 sec longer, up to 20 sec, for each Obliterate and Frostscythe critical strike during Pillar of Frost.

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  Frozen Dominion

  Pillar of Frost now summons a Remorseless Winter that lasts longer. Each enemy Remorseless Winter damages grants you Mastery, for 15 sec.

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  Frigid Executioner

  Runic Empowerment has a 25% chance to refund 1 additional Runes.