Just some thoughts I had about setting up fantasy religions. Obviously, or maybe not obviously, you don't need to supply all of the following details. Some may simply not be relevent to your game, while others may be left as matters of opinion or speculation among the players and characters (PC's and NPC's) in the game world.
Let me know if you think of anything that I left out.
(and I hope my outline formatting comes out right.)
Stuff to make up about the gods
I. The pantheon
A. Creation myth
1. Creation of the natural world
2. Creation of people
B. Organization
1. Family tree
2. Command structure
a) Rigid-fluid
Degree of authority/control
3. Relationships between deities
a) Couples
Allies/Partners
c) Rivals/enemies
C. Reality
1. Form. Examples:
a) The gods are all myth/superstition.
The gods are legends based on exaggeration of historical events.
c) The gods are spirits of dead ancestors or other historical persons.
d) The gods are abstract concepts with no actual consciousness.
e) The gods are quasi-real with forms/attributes/aspect assigned by worshipping cultures.
f) The gods exist on a different level of reality, which allows them to modify their aspects/appearance based on their own desires or the culture they interact with.
g) The gods exist in a concrete sense and have true forms/attributes/aspects, which may be subject to interpretation/misinterpretation by worshippers.
2. Power Level. Examples:
a) The gods are nothing more than mere mortals that are worshipped.
The gods are mere mortals believed to rise to divinity upon death or other event.
c) The gods are somewhat more powerful than typical mortals.
d) The gods have great power that only the greatest of mortals could rival.
e) The gods have incredible power beyond any mortal.
f) The gods have cosmic power, incomprehensible to mortals.
3. Power Source. Examples:
a) The gods' power is intrinsic.
The gods' power is granted by superior gods.
c) The gods' power comes from external forces.
d) The gods' power comes from natural phenomena related to the gods' portfolio.
e) The gods' power comes from worship.
f) The gods' power comes from mortals' deeds.
II. The deity
1. Myth/Story
2. Portfolio/Sphere of influence
3. Differences/similarities to other deities
4. Stats/powers/abilities
a) Possessions/Artifacts/Relics
Pets/Familiars/Mounts
5. Divine "rank"/Level of power
6. Home
a) "Plane" where the deity dwells
Relationship of the deity to the "plane(s)"
C. Psychology/behavior
1. Personality
2. Goals/desires
3. Degree of involvement in mortal affairs
a) Manifestations/Avatars
Spells/powers/abilities granted to clergy/worshippers
c) Signs/Miracles
D. Social
1. Among the gods
a) Reputation
Position/function/purpose
2. Among mortals
a) Popularity/Obscurity
Purpose of worship/reasons invoked
c) Abilities/skills typical/valued
III. The religion
A. Internal
1. Principles
a) Values/Dogma
Obligations/expectations of clergy
c) Obligations/expectations of laity
d) Laws/taboos/restrictions
e) Attitude toward heresy/disagreement/questioning of doctrine/theology
2. Practice
a) Rituals/Rites
Holidays
c) Prayers
d) Priestly Vestments/Raiment
e) Temple architecture/layout/decor
f) Expressions/idioms
g) Equipment/paraphernalia used
h) Resolution of disputes
i) Punishment/penance/atonement
j) Education/Indoctrination of the faithful
k) Proselytism
3. Status of clergy/laity
4. Sects/factions/orders
5. Organization/hierarchy
B. External
1. Position in the community
2. Relations with other religions
C. Race/ethnicity/location/culture of worshippers
1. Alternate interpretations/aspects
2. Alternate names
IV. "Divine Magic"
A. Effects
1. Types of effects available/not available
2. Power Level
3. Special Effects
B. Source/Method to acquire/use. Examples:
1. No actual divine magic exists. Priests don't claim any magic.
2. No actual divine magic exists. Priestly magic is all chicanery.
3. There's no real difference between divine magic and "arcane" magic.
4. Divine magic is an inherent force in the world, separate from wizardly magic. Priests access it by their own means.
5. Divine magic is a fragment of the god's or gods' power, which priests access by being priests or doing something that priests do.
6. Gods grant magic to priests directly and consciously, if they choose to.
7. Gods grant magic to priests through intermediaries or lesser divine beings, with occasional oversight by the god(s).
8. Gods grant higher-powered magic to priests directly and consciously, while lesser magic is granted more-or-less automatically.
9. Priests access magic through their own faith, without the god's direct involvement. Strength of faith determines success or power level.
