Thalyssras

Thalyssras is a fictional entity primarily known from the *Warhammer 40,000* lore, specifically within the *Dark Heresy* and *The Horus Heresy* settings. It is a mysterious and ancient entity associated with the Ruinous Powers, particularly the Chaos God Tzeentch. Described as a vast, shifting entity of shifting forms, Thalyssras embodies the concept of endless time, paradox, and the manipulation of fate. Its name is derived from the Old Astartes tongue and translates roughly to "the endless thread of time," reflecting its role as a force that weaves destiny into intricate, often contradictory patterns.

In the *Dark Heresy* campaign, Thalyssras is referenced as a malevolent presence that thrives in the labyrinthine depths of the Imperium’s forgotten sectors, particularly in the Necropolis of the Dead Gods. It is said to observe and influence the actions of mortals, particularly those who delve into forbidden knowledge or seek to alter the fabric of reality. Some texts suggest that Thalyssras is not a singular being but a collective consciousness, a hive mind of chaotic energies that seeks to unravel the linear progression of time itself.

The entity’s influence is often tied to the concept of the "Eternal War," a perpetual conflict that transcends mortal understanding. It is believed to manipulate events so that no outcome is ever final, ensuring that chaos and paradox remain eternal. Some scholars of the Adeptus Custodes or the Inquisition speculate that Thalyssras may be a manifestation of Tzeentch’s will, a tool used to bend the universe to the god’s whims. However, its exact nature remains shrouded in mystery, as even the most learned scholars of the Chaos Gods struggle to define it with certainty.

Thalyssras is rarely encountered directly in the lore, but its presence is implied through cryptic prophecies, shifting timelines, and the sudden appearance of paradoxes in the lives of those who seek forbidden truths. Its influence is often associated with the cults of Tzeentch, who may invoke its name in rituals meant to alter fate or gain knowledge of the future. Despite its enigmatic nature, Thalyssras remains a potent symbol of the unpredictable and ever-shifting nature of existence within the grimdark universe of *Warhammer 40,000*.