Patch 9.0.1(2020-10-13): Redesigned. Soul Shard cost removed. Duration increased to 16 seconds (was 8 seconds). No longer increases the target's damage taken. Only one instance may be applied at a time and is now limited to one target.
The Warlock may now afflict a target with up to 5 Unstable Afflictions at once.
Now learned at level 14 (was 10).
Damage increased by 5%.
Hotfix (2016-09-23):Unstable Affliction damage increased by 15%.
Hotfix (2016-08-11):When Unstable Affliction is dispelled, it now deals 120% of the remaining spell damage (was 200%).
Patch 7.0.3(2016-07-19): Redesigned. Damage per tick increased by 138%, duration reduced to 8 seconds (down from 14). Damage when dispelled is now affected by remaining duration. Now cost a Soul Shard instead of mana.
Patch 6.2.2(2015-09-01): Now deals 10% less damage in PvP combat.
Hotfix (2014-12-15):Unstable Affliction's damage has been increased by 20%.
Patch 5.4.0(2013-09-10): Damage has been increased by 21%.
Patch 5.2.0(2013-03-05): Unstable Affliction's Backlash effect is now always a critical hit and deals approximately 15% more damage.
Patch 5.0.4(2012-08-28): Now an Affliction specialization ability available at level 10. Duration reduced from 15 to 14 sec. No longer limited to one target.
Patch 4.1.0(2011-04-26): Damage done when it is dispelled has been doubled, but this damage can no longer be critical. Damage dealt by Unstable Affliction when it is dispelled now properly benefits from [Shadow Mastery].
Patch 4.0.6(2011-02-08): Silence effect has been reduced to 4 seconds, down from 5.
Patch 4.0.1(2010-10-12): Now a primary spell in the Affliction tree.
Patch 3.3.0(2009-12-08): The feedback damage from when this spell is dispelled is now affected by resilience as intended. Tooltip clarified to state that this spell is exclusive with Immolate.
Patch 3.2.0(2009-08-04):[Immolate] and Unstable Affliction: All ranks of these two spells will now overwrite each other.
Patch 3.1.0(2009-04-14): Feedback damage from dispelling this debuff will no longer be modified by effects on the victim which modify the damage the victim does.
Patch 3.0.8(2009-01-20): Will now gain the correct damage modifiers for the creature type of the target.
Patch 3.0.2(2008-10-14): Silence effect reduced to 3 seconds, down from 5.
Patch 2.3.0(2007-11-13): The silence from this ability is now subject to diminishing returns.
Patch 2.2.0(2007-09-25): This spell will no longer fail when a Warlock deselects their target midway through the cast.