Shadowflame

Gain the Shadowflame ability: Burns the enemy for 1.74 Shadowflame damage and then an additional 3.25 Shadowflame damage over 15 sec. Shadowflame triggers and benefits from all effects that modify or interact with Immolate, or with Affliction, Destruction, Fire, or Shadow spells, but only one of Immolate or Shadowflame per Warlock can be active on any target. In addition, Shadowflame can trigger your Improved Shadow Bolt talent and causes it to have 27 additional charges.