Cult of the Dragon
The Cult of the Dragon is an organization bent on releasing Tiamat. They are gathering a large hoard for her arrival.
The cult is organized into one head the leader then they have 5 followers who make up the 5 Wyrmspeakers. Under them are the Wearers of Purple who lead the Dragonclaws and entry level cultists.
Leader of the Cult
Wearers of Purple
The Cult appears to be working with the Red Wizards of Thay