1385 DR, Year of the Blue Fire
Most scholars believe that the Spellplague was the direct result of the murder of the goddess Mystra at the hands of Cyric, an engineered and calculated event by Shar. This popular theory holds that magic was bound for so long in Mystra’s Weave that, when the goddess died, it spontaneously and ruinously burst its bonds. Areas of wild magic, already outside the constraints of the Weave, were directly affected first, but the plague raged on and on in an ever-widening spiral, devastating some places and leaving others untouched. It even tore through the realms of demons, gods, and lost souls before the end.
Ancient realms that had passed beyond easy reach of the world were pulled back, such as the Feywild. The Abyss, home of demons, fell through the planes, unleashing swarming evils before finding its new home at the bottom of the Elemental Chaos. Even the long-forgotten sibling world Albeir burned in the plague of magic, despite having been cut off from Toril for tens of millennia. Portions of Albeir’s landscape were transposed with areas of Toril in the disaster. Such landscapes included their living populations, bringing realms such as Akanul and Tymanther to Faerun’s face. Across the Trackless Sea, an entire continent of the lost world reappeared.
The Spellplague was a potent agent of change, but it also set off a whole string of secondary catastrophes.
Many creatures that had been able to cast spells and channel magic through the Weave found themselves powerless in the Spellplague’s wake. Some never regained their abilities. Others attuned themselves to the new magical environment, aided by a diversity of talents, a process that took days for some and years for others. Still others took shortcuts to arcane power by swearing pacts to enigmatic beings.