Calamity

The Calamity is a cataclysmic event that has been forseen by many seers and is believed to be coming soon. Additionally, many monsters and villains use the warcry "Vas'zul will bring the Calamity." 
When Dumbledalf learned of the Calamity, he tested all of the members of the Adventuring Guild and the Mages Guild to learn their skills and weaknesses.
Yepip Anklegnaw has prophetic dreams about the Calamity.