Vaal Impurity of Lightning has restrictions on where or how it can drop.
Vaal Impurity of Lightning can drop from the Vaal Vessels found in Vaal side areas.
Recipes
Vaal Impurity of Lightning can be created from the following recipes:
Amount
Part
Description
Meta
9
Volatile PowerVolatile Power9Vaal Gem Quality:+20% CorruptedUnlimited power is apt to corrupt the minds of those who possess it.
Random corruptedVaal gem with 20% quality
A
1
The VoidThe Void1Reach into the Void and claim your prize.
Random divination card set exchange
A
Threshold jewels
The following threshold jewels augment Vaal Impurity of Lightning:
Note that the jewels may be drop disabled and can only be found in permanent leagues as legacy items.
Note that helmet enchantments are no longer obtainable since version 3.23.0 and can only be obtained in permanent leagues as already enchanted items from before this patch.