Set in Amber: Gods

Common Understanding

Gods are discrete things or entities, each with their own realms, and they are sometimes at war with or allied with others, with or without overlapping realms.
Gods can use magic.
Amber makes treaties with places, and usually King Bleys talks to their gods separately.

Gods are magical beings, connected at a base level to their realms, which are an extention of them.
A god may have several aspects - a god of Thunder may be Thor in one world and Zeus in another.
Gods can be in more than one place at the same time.
Gods have true names, but names are changeable things, and so as the god changes, the name will too.
A god can be bound in various ways, none of them easy.
Oberon's more talented children are at a level to strive with gods, but might not win, depending on circumstances. Starting PCs should be able to survive a god's passing attention, and mature PCs based around godlike themes should be able to do far more.

Amber allows shrines, but no chapels or churches to gods.
Most shadows have at least one god, and most gods have many many temples.
Religious practices vary wildly thoughout shadow, with a few constants
Amber makes trade treaties with places and divine, powers-based treaties with gods

The Unicorn is not thought of as a God, nor generally referred to as one. (OOC knowledge: The Unicorn is not a God.)
Worship of the Unicorn is popular in Amber, but not mandatory. Active temples of things other than the Unicorn in Amber will be dealt with efficiently, firmly, and with disappearances.
The Unicorn is taken as a fact, more like a prophet than a god.
Some say treaties with gods are made with or by the Unicorn's power

Gods can use their realm rather like humans can move a limb
In theory, a god's magic is limited only by the power/size of its realm, all that it can claim of its own theme or thing.
In practice, no god is without competition - there are many sea gods, many fire gods. Sometimes even aspects compete with each other.
A god's power is also held in check by how much focus it can bring to bear on a thing/place.
Shadow and Reality both have a weight or inertia that stops gods from coming together easily
Altars can be used to focus a god's magic and personality. Most human minds cannot bear the touch of gods, but there are certain people, oracles, who can also be used as a focus.
It is far, far harder for gods to manifest in Amber than elsewhere.

A Priest of the Unicorn is a channeler of the basic power of the universe.
Unlike a mage or a sorceror, a Priest can magically affect the world without directly touching it
Priests generally work through tools that are holy, and they call their works Miracles
Miracles only work where there is faith.