Coven of Istasha
Centuries ago the Elder Goddess Istasha, Mistress of Darkness, tried to break through the barriers of reality with the aid of cultists who had taken over a temple dedicated to Mystra, the Goddess of Magic. However this attempt was foiled by a band of adventurers who killed the cultists performing the ritual. However the cost of their victory was steep causing the death of the majority of the adventurers. The end result was a stalemate with the adventurer’s Wizard and the avatar of Istasha.
Through its vessel Istasha communicated with the Wizard and a bargain was struck. Provided that the Wizard travel the land seeing new sights and having new experiences Istasha would not break through the barrier and the Wizard would be able to draw on the Elder Gods power. To facilitate this the Wizard was instructed in the means to create a focus directly linked to the Elder god. However the Wizard realised that once he had passed the deal would end and the Elder God would enter into reality.
The Wizard then formed the first Coven of Istasha, dedicating training to strengthening the will and minds of its novices in training. Forming several Un-Blinking Eye’s, the Arcane Focus which is connected to Istasha, fully trained acolytes were sent out into the world to continue the pact after the Wizards passing. The Coven would adopt orphans from nearby towns and cities and train them in the strict mental discipline needed in order to call upon the power of Istasha without losing their sanity.