World of Warcraft®

Increases the duration of Corruption and Doom by 50%, and reduces their damage by 20%.

While off cooldown, your Dark Soul ability passively grants you 10% of the active effect, but reduces the power of Dark Soul by 10%.

Requires Demonology.

Teaches you the ability Dark Apotheosis.

Dark Apotheosis
You imbue yourself with demonic energies, reducing physical damage taken by 13.85%, reduces magic damage taken by 15%, and allows the use of various demonic abilities.

In addition, Soulshatter becomes Provocation which taunts your target, Twilight Ward becomes Fury Ward which will absorb all schools of damage, Shadow Bolt becomes Demonic Slash, and Fear becomes Sleep.

If you use Demonic Leap while falling, you slam into the ground rapidly and will not die from falling damage.

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

Your Felsteed and Dreadsteed can cross water while running and leave a trail of flames.