Xythi'Mort

Xythi'Mort, also known as the Seer God and the God of Prophecy, is the final antagionst in the Great War.  It is assumed to be the "lost" "fifth god" of the Four Gods, but was sealed because of trying to ursurp them.  In truth, it's an Old God, one of the dark powers that fought the Titans before the reordering of Azeroth and hides it's true form, a tentacled horror known as the "Core of Destruction" under a "Fifth God" form.
==Biography==
=Under Construction=
==Powers and Abilities==
When Xythi'Mort awakens, the whole of Azeroth is bombared with images of the Dark Histories(AKA: The current Warcraft timeline), along with an event in the far future implied to be a nuclear holocaust.  The images also give the illusion that all the disasters of the Dark Histories are happening at once instead of sequentially.
Xythi'Mort also controls legions of "reality Horrors" as well.