Similar to normal reality but with angels n demons

Action/adventure

Fred the immortal- created of the grand canyon

Current era of technology

Earth
Regular

Heaven
Areas have no gravity for sporting events.

Hell
Certain places have high gravity the damned can't escape so lazier demons can have easier pray

Energy
Many systems treat magic as energy similar to heat, magnetism, electricity, or movement. In many worlds such as Star Wars, this force is generated by living things. It could also be from astral radiation or human emotion.

Energy-based magic is easy to use because it comes with limitations. We know it takes more kinetic energy to move a big rock than a small rock, so we can imagine it requires more magical energy too. Spellcasters can’t blow up planets, because obviously that would take too much energy.

Higher beings
In some magic systems, gods or other powerful beings are the source of all magic. This is harder to work with, because the divine are technically spellcasters themselves, and incredibly powerful ones. You’ll need to set guidelines for how these beings operate so that you can explain why they do or don’t answer prayers whenever they’re asked. For instance, in Lois McMaster Bujold’s Chalion Series, the divine cannot directly influence the world with their magic. They can only work through people that do their will voluntarily.

How is it accessed and directed?
It’s not enough to have a source of magic. That source has to be available to a spellcaster, and that spellcaster needs to direct it to accomplish specific goals. The source should give you an idea for how it might become available. A substance can be traded on the market, gods can be prayed to, and individuals might be sensitive to magical energy – or maybe everyone has machines that do it all for them. Don’t be afraid to try something novel.

Directing magic can involve a range of activities, but it commonly includes these aspects:

Thoughts & will: Character thoughts provide an easy method of directing spells, but unfortunately it comes with few limitations to keep spellcasters from summoning a deus ex machina.

What are the constraints of the system?
Now it’s time to decide why magic can’t do anything and everything the spellcaster wants, whenever they want.

First, think through what magic is capable of doing in a theoretical best case scenario. It could range from absolutely anything to a single effect such as moving objects or pausing time. In Brandon Sanderson’s Warbreaker, magic is powered by a life force known as “breath.” Sanderson could have made breath do anything, but instead it’s mostly limited to animating objects and improving the caster’s senses. It can’t summon rain or make someone invisible, for instance. Limiting what magic can theoretically do will dramatically cut down the number of plot-breaking scenarios you might have to deal with.

Second, look through all the essential pieces of spell creation and casting, and think how the casting process might fail at each step. For instance, let’s say magic is powered by a substance found within the soil. Humans access it by eating a special plant that bio-accumulates it. Once eaten, the magical substance builds up in their systems until they focus their will to cast magic. Here’s how this system might break down:

Strength of will: A person’s ability to cast a spell could be compromised if they’re tired, drunk, or simply feel conflicted about their task. To make the spell work, they might have to understand the scientific details of what they want their magic to accomplish instead of giving it vague goals.

Time- studying moments in the past, & possible moments in the future
Space- manipulating gravity, matter, & other aspects of the physical world
Light- life/energy
Dark- was created to oppose Light, and saps away energy, instead of borrowing it.
Mental- telepathy, mind control, etc.
Spiritual- emotions, drawing upon spiritual energy to heal, astral projection & aura, etc.
Blood- creating bonds between souls using blood, communicating with dead spirits (I'd love any suggestions on how to make this particular branch work.)
Astral- astronomy; I think shapes & numbers could be very prominent in this, but I'm still working on the details, and any thoughts would be appreciated.
Elemental- control over nature, especially the four basic elements