Structured Entropy is a Guild skill, found in the Mages Guild Skill line. It can deal damage and heal you at the same time, which makes it a nice option for PVE or PVP gameplay.
Base Skill: Entropy
|Bind an enemy with chaotic magic, dealing 4642 Magic Damage over 20 seconds, and healing you for 435 every 2 seconds.|
Structured Entropy is a morph of the Entropy skill. The other morph is Degeneration. A nice option for Vampire PVE builds.