World of Warcraft®

Your Corruption spell will heal you for 20% of the damage dealt.

Players resurrected by Soulstone are returned to life with 100% health.

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 and Shadow Bolt becomes Demonic Slash.

Your Hand of Gul'dan can now be targeted at a location.

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

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