Combustion

When activated, this spell increases your critical strike damage bonus with Mage Fire damage spells by 75%, and causes each of your Mage Fire damage spell hits to increase your critical strike chance with Mage Fire damage spells by 10%. This effect lasts 30 seconds, which renews every time you gain a stack, or until you have caused 0 non-periodic critical strikes with Mage Fire spells.

Increases critical strike chance from Mage Fire damage spells by 10%.