While magic on Halqueme has been present - and used - since the dawn of time, humans have been improving their understanding of it over centuries. Widespread use of magic, especially of battle magic, only really took off around 16th century Asunder, and has been dubbed by historians the Thaumic Revolution.
The Seafolk send a plague, effectively winning the war with Siemark. The epidemic rages throughout Eastern Halqueme, especially ravaging regions that do not posses developed magic. Llitaw is hardest hit, with Velnie and Planum sharing the second place.