Bies

taotad's picture

Bies (read: b-yes) - in Slavic mythology, demoniacal,
obsessional bad spirit, demon, after acceptance of Christianity
identified with devil, translating Greek: daimon, daimónion, pneuma;

Source
en.wikipedia.org/wiki/Bies

Planescape, Dungeons & Dragons, their logos, Wizards of the Coast, and the Wizards of the Coast logo are ©2008, Wizards of the Coast, a subsidiary of Hasbro Inc. and used with permission.