The Church of the Cosmic Egg

The faithful worshipers of the Cosmic Egg- a massive egg, which holds the last Naga god (according to the Naga, at least). It was spirited away from their dying world during the Invasion of Naga. It is hidden away, somewhere in the Agripidian mainland, and is protected even more closely than the Grand Duchess.
Followers of the Cosmic Egg are exclusively Naga. While there are non-Naga that worship the Cosmic Egg, the Church itself does not allow them in any position of power, and they are excluded from more private rites and rituals. Unsurprisingly, the Church of the Cosmic Egg is found exclusively in the Agripidian Grand Duchy.