Elemental Chaos

The Elemental Chaos is a sea of the raw materials of creation and is untouched by any stabilizing force like the domains of the divine in the Astral Sea. Here the forces of chaos sweep across it, mixing and blending the elements into a maelstrom. Here, the imprisoned primordials strike out at their prisons and chains, vowing one day to destroy The Material Plane as well as the Gods.

Ecosystem

An Outsider’s Perspective The Elemental Chaos is a harsh environment and one where you must always be on guard while traveling through. The ever-changing landscape hides dangers unique to a location home to all the elements at once. Bubbling seas of acid, rivers of lightning and massive ice mountains move through the chaos, all the while earthbergs crash into one another.
The plane, beyond the floating materials of creation, is largely bare. Plantlife, most likely disgorged from the Material World somehow, rarely grows and when it does it only does so in very select locations where the conditions are just right, quickly destroyed by a random collision with an earthberg or liquid fire rains down, burning away all life.
Not much here could be considered of interest to most adventurers, though some may be called to enter the chaos in search of cultists, lost artifacts of the Dawn War or the primordials themselves.
A Native’s Perspective Nothing in the chaos stays the same, and the inhabitants mimic that. Those that call the Elemental Chaos home are largely the elementals who are formed and created by their planes, though the elementals formed in the chaos are typically created by numerous elements and maybe the only of its type. Reports of armies of archons, elementals created through a special elemental forge and grafted into armor, have escaped out of the chaos. Many say that these armies form outside of where their primordial master is imprisoned, ready for the day when the primordials break free and resume the war on the divine and their angelic host.
Manual of the Planes, 2008 WotC Manual of the Planes, 2008 WotC
The primordials locked away in the Elemental Chaos are hidden in its depths, unable to escape their prisons. Their attempts at escaping involve luring cultists to their causes and promising great power and treasures untold to those who help them escape. Among the pawns of the primordials are their titans who rule over domains in the Elemental Chaos, forcing it to change to their will, or else they move on to a location more suited for them. The titans will often have giants among their ranks who they use as their slaves and workers.
The other inhabitants of the Elemental Chaos are the genasi, many of them were once slaves but were either freed or, more likely, ran away from their masters. They have begun building settlements in the chaos, for very few elementals are willing to track down a runaway slave who might be already dead out in the chaos. The genasi do everything they can to keep their settlements going, but it is a hard life. It is even harder for them to convince traders to come out to the chaos, and they are forced to do what they have to, to survive.
Traits The Elemental Chaos is a place of creation and riotous change. Those with enough mental power can create a place of their own, though it is a constant struggle to hold anything together. Anything that is part of the Elemental Chaos floats through the plane, as if there is no gravity for it, while those who travel or any material from outside the chaos experience gravity. This is especially worrying for anyone who tries jumping from one floating earthmote to another, only for the floating earthbergs to suddenly move far apart and you begin falling until finding solid footing hundreds or thousands of feet below.
This holds true for any material brought into the chaos, if an arrow from the Material World is shot out into the Elemental Chaos, it acts as if there is gravity. If you, somehow, make and fire an arrow made of the materials in the Elemental Chaos, it will continue flying in whatever direction it was shot in, no gravity slowing or halting its progress.

Tourism

Travel to the Plane Traveling to the Elemental Chaos is considered incredibly difficult. It is at the very outer edges of the Inner Planes, where they bleed together and create the chaos. Luckily for any who wish to travel to the chaos are the teleportation and planar gates that are created by the Elemental Chaos. No one is quite sure how they form, but it is theorized that because the Elemental Chaos is pure chaos and magic, it was bound to happen.
These gate coordinates can be found in ancient tomes of knowledge, stumbled across while exploring the Elemental Chaos or told to the faithful followers of a primordial. Many only function some of the time or under very specific circumstances. It could be that a gate only works once a month for 3 days, while another gate may only work one way. Small settlements will often be set up outside of more active gates as many traders aren’t willing to travel very far from a known gate as the Elemental Chaos is constantly moving and shifting. The gates can take on a variety of appearances such as symbols floating in the air made of flames, pure gold blocks set in a glacier, or captured lightning arranged in complex patterns.
Traversing the Plane Adventurers will find this plane to be chaotic and ever-changing, making it incredibly difficult to really know where you are and, unlike in the Astral Plane, an adventurer can’t just will themselves to whatever destination they are looking for. The Elemental Chaos is an actual plane that is infinite in all directions, and it is constantly shifting.
Traveling by foot is incredibly foolhardy, and many who attempt it are never heard from again. Floating earthmotes range in size from a few inches to the size of continents, and the space in between the earthmotes could be so vast that even those that can fly would be too tired to make the journey before falling from exhaustion. The other problem is that earthmotes float in random directions and constantly are smashing into each other, though some say that the efreet of the Plane of Fire can determine where an earthmote is heading through their mysterious divination magics known as al-buraj.
A faster method of traveling the plane is utilizing the chaos gliders that are able to fly utilizing the invisible chaos currents that swirl through the plane, traveling thousands of miles in an instant, though it is a constant fight to stay on course while riding chaos currents. Or, you can utilize a lightning skiff that literally rides the crackling rivers of lightning, though you can only ever travel with the lightning and are restricted as to where you can travel too. If there are no lightning storms where you want to go, you are unable to reach it.
Airships are also an option as well as using a planar dromond or spelljammer, though they may become damaged by the harsh environment and they must be properly prepared in case you travel through a huge gas cloud of ooze, or tumultuous whirlwinds of ice descend on you.
Morphic & Fluid Because the Elemental Chaos is of constant change, it can be morphed by those with a powerful enough mind. Creatures can calm the chaos around them, stopping hazards from exploding or causing their earthmote to move in a direction of their choosing. The larger the area that a creature wishes to control, the harder it is for them to control it.
Powerful creatures, like the primordials' titan children, will attempt to control their lands and morph them to fit their desires, though some find it easier to just move their domains throughout the chaos rather than fight the chaos constantly.
Hazards Throughout the Elemental Chaos are materials mixing in strange and new ways. While it may be obvious to ignore the bubbling sea of ooze, it may not be as easy to see which parts of an earthmote might explode out in fire, or that the crust of the earthmote is incredibly thin and just below the surface is quicksand made out of lightning and mud. The hazards of the Elemental Chaos are as varied as the materials that make it up, and they are constantly shifting through a myriad of different forms.

Type

Plane of Existence

Location under

Inner Planes