World of Warcraft®

You restore 20% of your total health after you kill a target in Demon Form that yields experience or honor.

Teaches you the ability Imp Swarm.
Requires Demonology.

Imp Swarm
Summons 5 Wild Imps from the Twisting Nether to attack the target.

The Wild Imps passive effect is disabled while Imp Swarm is on cooldown. Imp Swarm's cooldown is reduced by spell haste. Also increases Wild Imp's cooldown by 4 sec.

Your Fear causes the target to tremble in place instead of fleeing in fear, but now causes Fear to have a 5 sec cooldown.

Your Eye of Kilrogg is no longer stealthed and can now place your Demonic Circle. The casting Warlock must be within line of sight of the Eye of Kilrogg to place the Demonic Circle.

In addition, the movement speed of your Eye of Kilrogg is increased by 50% and allows it to fly in areas where flying mounts are enabled.

Increases the swim speed of targets affected by your Unending Breath spell by 20%.