Improved Corruption, an Affliction Warlock talent in WoW Forever

Improved Corruption is a passive talent in row 1 of the Affliction tree. It needs no points in Affliction, so you can take it from level 10 (up to 5 levels sooner with the Legacy perk Talented). It has 5 ranks. It has changed since Classic Era.

Improved Corruption

5 ranks

Reduces the casting time of your Corruption spell by 0.4 sec and increases the damage it deals by 2%.

Every rank of Improved Corruption

Rank	Text
Rank 1	Reduces the casting time of your Corruption spell by 0.4 sec and increases the damage it deals by 2%.
Rank 2	Reduces the casting time of your Corruption spell by 0.8 sec and increases the damage it deals by 4%.
Rank 3	Reduces the casting time of your Corruption spell by 1.2 sec and increases the damage it deals by 6%.
Rank 4	Reduces the casting time of your Corruption spell by 1.6 sec and increases the damage it deals by 8%.
Rank 5	Reduces the casting time of your Corruption spell by 2 sec and increases the damage it deals by 10%.

Numbers in gold changed from the rank above.

Where it sits in the Affliction tree

Needs

No prerequisite talent

Unlocks

No talent needs it

Same row

Row above

None: this is the first row

Row below (row 2)

Row numbers are on the left and the number in a corner is a talent's rank count. Gold marks Improved Corruption.

Compared with Classic Era

What differs from Classic Era: its rank 1 text.

Rank 1 text

Classic Era

Reduces the casting time of your Corruption spell by 0.4 sec.

WoW Forever

Reduces the casting time of your Corruption spell by 0.4 sec and increases the damage it deals by 2%.

Open the Warlock talent calculator

All Affliction talents

The other Warlock trees: Demonology and Destruction. Everything that changed for the Warlock since Classic is on the changes page.

Game data from the WoW Forever beta client, build 1.60.1.70291, as published by talentsforever.com (CC BY 4.0) on 2026-10-08 and reformatted by us. Numbers can still change before launch.