Child of Daralet
From Drunkapedia
The Child of Daralet event took place in December Y2K. The Cragstone River turned red, and so did the lake. In fact, all bodies of water were blooded red during this time because Bael'Zharon roamed the land, and caused terror into the hearts of Derethians in the major cities of the fabled island. Eventually, Asheron of course defeated Bael, albeit with the assistance of countless players, and so the event, and the year, closed with Bael's downfall.