Corrupted Flux Essence from the Abyssal Realm.
This form of essence has been altered over the ages by Samalek to prepare it for release into The Hub and the Fifth Realm.
While still dangerous, it is considerably less fatal and causes the formation of Hazraadim.
Exposure for humans has a higher rate of granting them some kind of “enhancement.” Be that the ability to use Magic or converting them into Amerdus.
In 2386-2408 PC, this is the primary form of essence that flowed into reality.