Scorch

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

Connected above

The tree draws a line into Scorch from Fervent Flickering.

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  Fervent Flickering

  Fire Blast gains 1 additional charge and its damage is increased by 25%.

Connected below

Scorch leads on to Heat Shimmer and Scald.

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  Heat Shimmer

  While Combustion is not active, damage from Ignite has a small chance to make your next Scorch instant, deal 100% increased damage, and deal damage as though your target was below 30% health.

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  Scald

  Fireball always critically strikes enemies below 30% health. When Fireball or Scorch damage an enemy below 30% health, Fireball deals 25% increased damage and Scorch deals 250% increased damage.

Same row

Also on this row: Flame On, Kindling, Critical Mass and Deep Impact.

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  Flame On

  Fire Blast gains 1 additional charge and its cooldown is reduced by 2.1 sec.

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  Kindling

  Combustion's cooldown is reduced by 60 sec.

• 
  Critical Mass2 ranks

  Your spells have a 4% increased chance to deal a critical strike. You gain 10% more of the Critical Strike stat from all sources.

• 
  Deep Impact

  The enemy closest to the center of Meteor's impact takes increased damage.