Omnia is the official god of the city of Arbor Magna. The elves all worship him exclusively and everyone else in the city is expected to pay tithes to their nearest Omnia temple. As long as they fufil this duty they are permitted to also worship any other deities they wish perhaps ones they have brought with them from the wider empire where other gods are worshipped. The largest temples are on the Canopy, some of those also contain relics like the armour of Omnia.