Blight

From SFWiki

The Blight is a twisted wasteland region filled with ambient Corruption Magicks that slowly eat away at anything within. The Blight is continually increasing in size.

At the center of the Blight is the great Blood Gate, theorized to be the cancerous heart of all Corruption within the archipelago.

Anything that enters the Blight is subject to Corruption unless protected against Corruptive Blood Magicks.