Each post adds something to the setting, try not to contradict other posts. I'll start,
> The world has two small moons instead of one.
>>53412001
Humans are not native to the world, and arrived through a rift during the last big Magical Disaster.
>>53412001
Because of the intense tidal forces, life in the oceans has evolved to be very sedate and calm at high tights when the water is calmest, and vicious and predatory when the tide is low and the ocean life is exceedingly crwoded for space and habitation.
The only native inhabitants are varying species (colors) of sophont crystals, possessing the ability of levitation and telekinesis proprtional to their volume.
Besides the crystals, there is no other native intelligent life. All non intelligent life is organic.
>>53412049
One school of magic involves the practice of opening rifts to other dimensions and carefully guiding the energy that spills from them.
>>53412097
These crystals sustain themselves by absorbing the magic from ley lines that pulse throughout the world. Most native flora survives by magi-synthesis or chemo-synthesis, photosynthesis is comparatively rare.
>>53412001
And three suns.
>>53412086
Needle Reefs are barbed colonial organisms that are photosynthetic during the day, and at night they release scores of feeding tentacles that feed on creatures attempting to hide within their network of branching limestone structure.
>>53412177
>>53413149
Needle Reefs do not produce enough oxygen for human colonists to breath, so people survive in domed cities fueled by tapping into energy produced by rift bleeding.
They must bring air with them when they explore the planet.
>>53412001
the only Nitrogen-Oxygen rich part of the atmosphere is in the center of a giant hurricane over 50,000 kilometers wide. the edge of the eye moves at well over 700 kph, but its speed across land is slow enough to allow rainclouds to form in the center, creating intense rainstorms that create temporary lakes that are absorbed back into the hurricane a few months later when the edge reaches them.
the majority of the rest of the atmosphere is chlorine based.
>>53412049
This was the 7th big magical disaster in human history.
>>53412001
>They are constantly warring for dominance over the night sky
After being forced out of their forests by an implacable foe, the elves have retreated to massive fortress citadels atop the highest of the worlds mountains, while others operate out of the remnants of floating cities left behind by a race of gods that died out long ago.
They replace their own lost children by abducting children of other races and raising them in the arts of magic.