Soulburn

Soulburn is a Warlock ability learned at level 10 for. It allows the warlock to use the secondary effects on the following spells:
 * Drain Life
 * Summon Imp
 * Summon Voidwalker
 * Summon Succubus
 * Summon Felhunter
 * Summon Felguard
 * Demonic Circle: Teleport
 * Soul Fire
 * Healthstone
 * Searing Pain