Ancient Power

In the Unholy Death Knight talent tree, Ancient Power sits in the Unholy specialization talents, row 9 of 11. It takes 2 points to fill. Its row opens once 20 points are spent in Unholy Talents.

Connected above

The tree draws a line into Ancient Power from Blightburst and Putrid Echoes.

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  Blightburst

  The explosion effect of Putrefy extends the duration of your plagues by 3.1 sec and deals 35% of the damage they would deal over that time instantly. Putrefy now applies your plagues to unaffected targets.

• 
  Putrid Echoes

  Putrefy deals 20% increased damage, has 2 additional charges and consumes up to 2 available charges.

Connected below

Ancient Power leads on to Lord of the Dead.

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  Lord of the Dead

  Putrefying a Lesser Ghoul has a 100% chance to reanimate it as a Magus of the Dead who hurls Frostbolts and Shadow Bolts at your foes for 15 sec. When you control 3 Magus of the Dead, sacrifice them to summon their Lord of the Dead for 15 sec, casting Frostbolts that chain between enemies. Magus with higher remaining duration grant increased power.

Same row

Also on this row: Scourging, Unholy Aura and Commander of the Dead.

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  Scourging2 ranks

  Scourge Strike now causes your Plagues to erupt at 65% effectiveness. Clawing Shadows can now stack 1 additional times.

• 
  Unholy Aura2 ranks

  Magus of the Dead grants you 1.1% Haste for 15 sec. Multiple applications may overlap.

• 
  Commander of the Dead2 ranks

  Dark Transformation empowers your Dark Arbiter, Abomination, Magus and Lesser Ghouls for 30 sec, increasing their damage by 25%.