According to temple tradition, eight lights appeared above the harbor during the city's founding and each cast a different shadow across the sand. The founders followed the shadows to eight wells, where they found relics belonging to Azhur, Sirocco, Qasira, Namaris, Veyr, Merae, Ilyon, and Thalassa. The gods then established a covenant: none would rule the port openly, and none would reveal what lay beneath it. The city prospered, becoming known as the Pearl of the Desert, while the gods withdrew into distant signs, dreams, tides, and rumors.

The world is a pearl suspended between two infinities: the Starless Deep below and the Bleached Firmament above. The port city rests upon a buried celestial shell, whose inner nacre became the desert and whose hollow core became the sea. The gods are not creators but custodians of eight fractures in that shell. Thalassa tends the sea-fracture, Azhur the law-fracture, Qasira the light-fracture, and Namaris the death-fracture. Sirocco, Veyr, Ilyon, and Merae move between the fractures, each pursuing a different answer to why the pearl still has not opened.

The Covenant of the Eight Horizons has no supreme priesthood. Eight Orders maintain the major shrines, each led by a distant-speaking hierophant who never claims to have met their deity. Beneath them are harbor chaplains, shrine-keepers, navigators, oath-scribes, rain-callers, death-guides, market-oracles, and road pilgrims. The Temple of the Eight serves as neutral ground for disputes, though its silence is considered a verdict by some and an invitation by others. Religious authority comes from ritual expertise, fulfilled omens, and public service rather than doctrine. The most respected clergy are those who can honor one god without insulting the other seven.

The religion is decentralized and maritime in practice. Each neighborhood maintains a shrine to one deity, while the central Temple of the Eight contains eight unlit alcoves and no statues. Priests are called Keepers of Distance and are expected to interpret signs without claiming certainty. Sailors favor Thalassa, Veyr, and Qasira; merchants favor Azhur and Merae; rebels favor Ilyon; mourners favor Namaris; and travelers favor Sirocco. Festivals overlap rather than replace one another, creating a calendar of competing observances. Most citizens honor all eight publicly, but privately choose one patron whose silence they can endure.

The departed arrive at the Drowned Gate, a silent harbor beneath the desert. There, Namaris weighs their remembered promises while Qasira illuminates the paths they might have taken. Those who are accepted become distant lights above the Pearl of the Desert; oathbreakers are claimed by Veyr, who carries them beyond the horizon. Some souls return through Sirocco's hidden roads, though neither the living nor the gods can say whether they return unchanged.