Voidform

In the Shadow Priest talent tree, Voidform sits in the Shadow specialization talents, row 5 of 11. It is a single-point node. Its row opens once 8 points are spent in Shadow Talents.

Connected above

The tree draws a line into Voidform from Surge of Insanity, Descending Darkness and Tormenting Whispers.

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  Surge of Insanity

  Mind Flay damage increased by 15% and Insanity generation increased by 30%.

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  Descending Darkness

  Increases Tentacle Slam damage by 300%.

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  Tormenting Whispers

  Increases Shadow Word: Madness damage by 15%.

Connected below

Voidform leads on to Maddening Touch, Improved Voidform or Ancient Madness and Shadeburst.

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  Maddening Touch

  Vampiric Touch deals 20% additional damage and has a chance to generate 1 Insanity each time it deals damage.

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  Improved Voidform

  Voidform increases your spell damage by an additonal 5% and grants 2 additional uses of Void Volley.

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  Ancient Madness

  When Voidform ends, the haste lingers and decays over 10 sec.

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  Shadeburst

Same row

Also on this row: Shadowy Insight, Voidtouched, Haunting Shadows and Mental Decay.

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  Shadowy Insight

  Shadow Word: Pain periodic damage has a chance to cause your next Mind Blast to be instant and ignore its cooldown.

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  Voidtouched

  Increases your Shadow Word: Madness damage by 6% and increases your maximum Insanity by 50.

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  Haunting Shadows

  Shadowy Apparition damage increased by 10%. When Shadowy Apparitions deal damage, they extend the duration of your Shadow Word: Pain and Vampiric Touch on the target by 1.1 sec.

• 
  Mental Decay

  Increases the damage of Mind Flay by 25%.