Rank 1: Increases the duration of your Immolate by 3 sec, and you have a 4% chance to gain the Molten Core effect when your Corruption deals damage. The Molten Core effect empowers your next 3 Incinerate or Soul Fire spells cast within 15 sec.

Incinerate - Increases damage done by 6% and reduces cast time by 10%.

Soul Fire - Increases damage done by 6% and increases critical strike chance by 5%.

Rank 2: Increases the duration of your Immolate by 6 sec, and you have a 8% chance to gain the Molten Core effect when your Corruption deals damage. The Molten Core effect empowers your next 3 Incinerate or Soul Fire spells cast within 15 sec.

Incinerate - Increases damage done by 12% and reduces cast time by 20%.

Soul Fire - Increases damage done by 12% and increases critical strike chance by 10%.

Rank 3: Increases the duration of your Immolate by 9 sec, and you have a 12% chance to gain the Molten Core effect when your Corruption deals damage. The Molten Core effect empowers your next 3 Incinerate or Soul Fire spells cast within 15 sec.

Incinerate - Increases damage done by 18% and reduces cast time by 30%.

Soul Fire - Increases damage done by 18% and increases critical strike chance by 15%.