Path of Exile - Blight First Impression (98% AOE, 130% Inc Dur, gem lvl 16)
Support gems: Controlled Destruction, Increased Area, Increased Duration, Void Manipulation, Faster Casting. Passives and gear was my ED/Contagion Trickster, so it was quite optimized. Despite all that, skill is simply mechanically weak on it's own, and I don't see a reason to combine it with ED when Contagion and Wither exist.