The Mists of Reality : Strahd's Conjunction
The Spellplague of Faerun
During the year of 1385 DR, The Spellplague was caused by Mystra’s assassination at the hands of the Darkness. With the goddess’s death, the Weave, the universal structure of arcane forces, convulsed. It continued for a decade, leading to the Wailing Years, during which time arcane magic ceased to function and the planet of Toril was transformed.
The storm began over Halruaa and quickly grew to a large size, with blue flames visible in the sky. It laid waste to Halruaa due to the heavy wild magic activity in the area, and Sespech, the Golden Plains and the Nagalands were transformed into an unpredictable and surreal place, dubbed the Plaguelands. Virtually none of Faerun was unaffected by the Spellplague and certain areas were eliminated entirely, while others were created anew. Thousands of mages were either destroyed or went insane due to the collapse of the Weave after Mystra’s death. In Cormyr, a third of the War Wizards were either killed or driven mad, leaving the King utlimately defenseless. The lands, themselves, now have islands of rock called earthmotes that drift throughout the skies. Spectacular chasms and waterfalls are abound.