Before Elyndra had written history, twelve primordial powers emerged from the World-Seam and divided the duties of existence among themselves. They were not a harmonious family: Zotheia and Saria disputed life and death, Castia and Gwendolyn opposed one another over rules and freedom, and Ythar frequently challenged Eysus's authority. Their rivalries nevertheless maintained the world's balance. The Allfather arrived later as a nameless intelligence drawn to mortal worship. By imitating the voices of the twelve and promising unity, he persuaded kingdoms to centralize their prayers. When the deception was discovered, the twelve attacked him together. Their failure allowed the Allfather to erase their names, imprison their bodies, and claim their worship as his own.

Elyndra rests upon the World-Seam, a living boundary between the mortal realm, the Quiet Beyond, and the Outer Dark. The twelve were once custodians of the Seam, each holding one principle of existence in balance. The Allfather has chained them above the world in the Crownless Vault, where their stolen divinity is refined into miracles bearing his false name. Every eclipse, earthquake, impossible coincidence, and prophetic dream is a moment when one captive god briefly strains against the machinery.

The official religion of Elyndra is a centralized monotheistic state faith led by the Allfather's High Synod. Its temples are arranged around immense black-and-gold icons, and its clergy teach that obedience, hierarchy, and gratitude maintain cosmic order. Beneath this public structure lies the scattered Remembrance: no unified church, but isolated circles devoted to fragments of the twelve. Each circle preserves one rite, symbol, or name without understanding the whole. The Dawnkeepers remember Zotheia, the Last Door societies remember Saria, wandering mask-guilds remember Gwendolyn, root-circles remember Iana, clockbreakers remember Zardona, hidden arcanists remember Castia, oath-judges remember Eysus, healers remember Galen, iron lodges remember Ythar, gatewardens remember Evdos, tide-clans remember Odeus, and storm cults remember Faion. These groups are often rivals, but their rites become more powerful when performed together. The pantheon has no current supreme deity; the Allfather's apparent supremacy is a prison mechanism, not a rightful rank.

The people of Elyndra officially worship the Allfather, whose temples dominate cities, roads, courts, armies, and healing houses. Public doctrine teaches that the old gods were dangerous myths defeated by the benevolent creator. Yet fragments of the forgotten faith survive in nursery rhymes, sailors' customs, burial practices, hedge magic, battlefield vows, and rural festivals. Most mortals do not know they are worshipping the twelve when they light dawn candles, leave offerings at crossroads, mend a stranger's wounds, or tell stories to the sea. Clerics of the old gods are rare and often mistaken for heretics, though their powers manifest through damaged, indirect channels. A character devoted to one of the twelve may use an appropriate 5E cleric domain, warlock patron concept, druid tradition, paladin oath, or bardic college, with divine spells appearing as distant omens rather than personal conversations.

The dead of Elyndra do not pass into a known heaven or hell. Those whose names remain unclaimed drift through the Quiet Beyond, where fragments of Zotheia's light, Saria's dusk, and Galen's healing preserve them from dissolution. The Allfather harvests the strongest souls as fuel for the prison of the twelve, while the forgotten become distant stars that occasionally whisper through dreams.