Critical Mass

In the Fire Mage talent tree, Critical Mass sits in the Fire specialization talents, row 5 of 11. It takes 2 points to fill. Its row opens once 8 points are spent in Fire Talents.

Connected above

The tree draws a line into Critical Mass from Cauterize and Meteor.

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  Cauterize

  Fatal damage instead brings you to 35% health and then burns you for 28% of your maximum health over 6 sec. While burning, movement slowing effects are suppressed and your movement speed is increased by 150%. This effect cannot occur more than once every 6 min.

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  Meteor

  Calls down a meteor which lands at the target location after 3 sec, dealing (900% of Spell Power) Fire damage to all enemies, and burns the ground, dealing Fire damage over 4 sec to all enemies in the area. The enemy closest to the center of the Meteor's impact takes 75% increased damage. Damage reduced beyond 8 targets.

Connected below

Critical Mass leads on to Controlled Destruction and Mote of Flame.

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  Controlled Destruction
• 
  Mote of Flame

  All Fire damage dealt increased by 3%.

Same row

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

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  Scorch

  Scorches an enemy for (100% of Spell Power) Fire damage. When cast on a target below 30% health, Scorch is a guaranteed critical strike. Castable while moving.

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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.

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  Deep Impact

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