Shadowburn

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

Connected above

The tree draws a line into Shadowburn from Explosive Potential.

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  Explosive Potential

  Reduces the cooldown of Conflagrate by 2 sec.

Connected below

Shadowburn leads on to Fiendish Cruelty and Chaotic Inferno.

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  Fiendish Cruelty

  Critical strikes dealt by Chaos Bolt, Conflagrate, or Incinerate have a 10% chance to make your next cast of Shadowburn within 30 sec cost no Soul Shards and usable on any target regardless of health.

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  Chaotic Inferno

  Increases Chaos Bolt damage by 5% and Chaos Bolt now has a 25% chance to make your next Incinerate instant.

Same row

Also on this row: Backlash, Improved Havoc, Ashen Remains and Cataclysm.

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  Backlash2 ranks

  Increases your critical strike chance by 2%. Physical attacks against you have a 20% chance to make your next Incinerate instant cast. This effect can only occur once.

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  Improved Havoc

  Increases the duration of Havoc by 5 sec and increases the damage Havoc victims are dealt by an additional 10%.

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  Ashen Remains2 ranks

  Chaos Bolt, Shadowburn, and Incinerate deal 3% increased damage to targets afflicted by Wither.

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  Cataclysm

  Calls forth a cataclysm at the target location, dealing (364.5% of Spell Power) Shadowflame damage to all enemies within 8 yards and afflicting them with Wither.