Telos

The Master of the Iron Sky, known as Telos in most tongues, was a sleeping primordial beneath Telos City in Vaasa during the 15th Century DR. He was the source of the Warlock Knights' power.

Description
Telos was comatose and immobile during the 15th Century DR. However, his dreams and unconscious thoughts were known by at least some members of the Warlock Knights.

Telos' body was made of ironfell, a magical metal-like substance which he would quickly regenerate if it was removed from him. This material was mined extensively by the Warlock Knights to make their weapons, armor, and distinctive rings.

History
Telos arrived on Toril when he fell to the tundra of Vaasa as a "shooting star" during the Spellplague. The impact created a crater that was a half mile wide and 800 feet deep, and he was left in a seemingly permanent catatonic state. The one who first discovered him ended up adopting the title of the Voice of Telos, and founded the organization that would become the Warlock Knights. The Knights began to mine the primordial's body for ironfell and learned how to siphon his power. In 1460 DR, the Warlock Knights used Telos' power to begin a war of conquest across Vaasa, and ultimately seized control of the realm by 1470 DR.

At some point in the 15th Century DR, Telos City was constructed in the primordial's impact crater with the Citadel of the Iron Sky built directly over his body. This city became the capital of Vaasa, the headquarters of the Warlock Knights, the home of the Voice of Telos, and the center for a growing religious-like veneration of the primordial.

Worshipers
Under the Warlock Knights, veneration of Telos was practiced in Vaasa, and this was the only permissible faith in Telos City. Services were held in the Citadel of the Iron Sky, and a priest-like sect of warlocks called Luminaries, led by the Voice of Telos, presided over the faith and maintained Telosian temples and shrines across the realm.

Despite this veneration, the Warlock Knights' relationship with Telos was decidedly more parasitic than pious. The Knights gained their powers by draining it form the unconscious primordial in order to wield it for their own. This was in addition to their extensive harvesting of ironfell from his body as well as a practice of extracting pieces of his soul in order to animate military constructs called shardsouls. By 1479 DR, a rift had begun to form among the Knights between those led by the Voice of Telos, who wished to heed the will of Telos as understood through the primordial's dreams, and those led by Knight-Vindicator Mansard Kanaoth, who wished to use the primordial solely as a tool.

It was not unheard of for Warlock Knights to worship Bane in addition to or instead of Telos.

Pacts
The Warlock Knights tapped into Telos' power with the use of star pacts, of which there were two main types:

The more common pact was the one used by the Warlock Knights themselves to steal the primordial's power. This pact used ironfell as an important medium, and allowed Warlock Knights to channel Telos' radiant energy through the weapons, armor, and items made from it. The Knights' powers manifested as dazzling or searing light, and were often themed around shooting stars and meteors.

Less common was the pact formed by the Nishaadhri, also called the Bound Ones. These were often arcane spellcasters compelled to swear fealty to the Warlock Knights in order to be allowed to practice their Art. In addition, they formed a special pact with Telos which granted them powers more akin to wizards or priests, and the most powerful of these warlocks would be recruited as Luminaries. The Bound Ones' powers manifested as glowing purple tendrils.

It was strongly implied that the Voice of Telos had a unique pact with the primordial which made them powerful enough to rule the Warlock Knights and granted seemingly unlimited telepathy.