I have added a new champion spawn at the event area (Access gained through the graveyard moon gates).
Its a Pestilence Champion Spawn (Evil thing)......
It has some very special drops, once you defeat the Champion quickly search the body and find -
Corruption, Muculent, Taint, Scourge, Grizzled Bones and Blight.
You will also get the gold fountain effect and the chance of power scrolls and arties.