Scars of Faerûn
Thay was a dark and forbidding land of windswept mountains and badlands. Thay had the largest population of undead in all Faerûn.
Their ruler is Szass Tam, a powerfull Lich, the highest of the eight Zulkirs who control Thay.
Tam is the Zulkir of Necromancy and commands the undead Legion of Bone, led by his vampire and lich generals.