Improved Havoc

In the Destruction Warlock talent tree, Improved Havoc 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 Improved Havoc from Mayhem or Havoc.

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  Mayhem

  Your single target spells have a 35% chance to apply Bane of Havoc below a nearby enemy for 5.1 sec. Curses the ground with a demonic bane, causing all of your single target spells to also strike targets marked with the bane for 50% of the damage dealt. Lasts 5.1 sec.

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  Havoc

  Marks a target with Havoc for 15 sec, causing your single target spells to also strike the Havoc victim for 50% of the damage dealt.

Connected below

Improved Havoc leads on to Summon Infernal.

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  Summon Infernal

  Summons an Infernal from the Twisting Nether, impacting for (60% of Spell Power) Fire damage and stunning all enemies in the area for 2 sec. The Infernal will serve you for 30 sec, dealing damage to all nearby enemies every 2 sec and generating 1 Soul Shard Fragment every 1 sec.

Same row

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

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  Shadowburn

  Blasts a target for (496.8% of Spell Power) Shadowflame damage. Only usable on enemies that have less than 20% health. Restores 1 Soul Shard and removes its cooldown if the target dies within 5 sec.

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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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  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.