Yhalvia had been ruled by the baatezu devil lord Orlex, and his reign was naturally cruel, depraved, and wicked. Thakorsil led a band of rebellious wizards to depose Orlex. To do so, they created the throne known as Thakorsil's Seat to imprison and permanently bind and enslave the evil fiend. Unfortunately, although they had the best of intentions, the device demanded deeds of despicable evil to function. Thus, they devised the ritual of twin burnings, which involved the sacrifice of beings of good heart, believing this was for the greater good, that the ends justified the means. They went ahead with the horrific rites, and successfully bound and enslaved Orlex in the Seat,
They then formed a council of wizards to govern Yhalvia. However, corrupted by the sacrifices and with Orlex as their slave, Thakorsil and the rest soon became as cruel, depraved, and wicked as the devil they had replaced. In time, others overthrew them, Orlex was banished to the planes, and Thakorsil's Seat was lost and believed destroyed.
- ↑ Anthony Pryor (1995). Spellbound (Campaign Guide). (TSR, Inc), p. 107–108. ISBN 978-0786901395.
- ↑ Ed Greenwood, Eric L. Boyd (1996). Volo's Guide to All Things Magical. (TSR, Inc), p. 116–118. ISBN 0-7869-0446-1.
- ↑ Dale Donovan (July 1998). Villains' Lorebook. (TSR, Inc), p. 128. ISBN 0-7869-1236-7.
- ↑ Bruce R. Cordell, Ed Greenwood, Chris Sims (August 2008). Forgotten Realms Campaign Guide. (Wizards of the Coast), p. 58. ISBN 978-0-7869-4924-3.