The in-game information in this article is kept purely for historical purposes and may not need to remain under any other categories.
Everlasting Affliction
Your Corruption and Unstable Affliction spells gain an additional X% of your bonus spell damage, and your Drain Life, Drain Soul, Shadow Bolt, and Haunt spells have a Y% chance to reset the duration of your Corruption spell on the target.
Your Corruption and Unstable Affliction spells gain an additional X% of your bonus spell damage, and your Drain Life, Drain Soul, Shadow Bolt, and Haunt spells have a Y% chance to reset the duration of your Corruption spell on the target.
^Bonus spell damage is applied per tick (not for the whole duration, unlike Empowered Corruption), so it adds an additional 5% per point to Unstable Affliction and an additional 6% per point to Corruption
Tips and tactics
I may be necessary to clip and recast Drain Soul while the target is under 25% HP in order to ensure Corruption is properly refreshed.
Patch changes
Hotfix (2009-12-17): "Everlasting Affliction can now refresh the duration of Corruption on a target when the Warlock casts Drain Soul."