The Battlefield of Acheron

The hue and cry of battle is the first sound a soldier hears when arriving on Acheron and the last sound a refugee hears when leaving. That's all there is on Acheron: Conflict, war, strife, struggle and in some cases pride. Many armies populate Acheron but leaders are scarce. Truly, rebels without a cause are common on Acheron, whether they're petitioners, mortals, fiends, or celestials.

Acheron has four layers, each made of island or even continent sized iron cubes floating in the inky black void. Sometimes the cubes collide, and echoes of past collisions linger throughout the plane, mingling with ring of sword on sword as armies clash across the face of the cubes.

Traits

 * Objective Directional Gravity: The strength of gravity is the same as the Material Plane, but which way is down depends on which face of the cube you're on. Walking across edges between faces can be dizzying for the inexperienced.
 * Time is passes the same just like it does in the mortal plane however those truly devoted to combat feel time going faster than normal as they lose themselves to the feeling of war and conflict.
 * Divinely Morphic: Acheron changes at the whim to its deities. Ordinary creatures must use spells and physical effort to change the battlefields. It all depends on who entity is in control of the Sanguine Obelisk.
 * Magic is oddly enough completely normal as it seems that this plane has not suffered from any eldritch influence and as such the magic is not chaotic and those that tap into the magical source here are not afflicted with anything and will get the intended affect for magic.

Links to Other Planes
Back during the time of the Infernal plane also known as the nine hells, The River Styx would have flowed through the top layer of Acheron, called Avalas and would have flowed through many of Avalas's cubes. However this is no longer the case ever since the cosmic invasion. Portals however seem to open periodically in the mist as many unsuspecting travelers might accidently travel here.

Inhabitants
Renegade armies filled with every sort of creature wander the face of Acheron looking for enemy forces to fight. However, mutiny or madness soon brings down even the strongest military leader, leaving most armies without true objective other than destruction of other renegade armies. Sometimes armies of undead or constructs last longer, because they are able to mindlessly fulfill their last orders.

Armies that have not gone completely mad may still seek goal, such as the defense of a realm, the procurement of provisions, the overthrow of an imposter king, or any of a hundred other causes. Unfortunately, because most of those causes were important on a plane far from Acheron, even the most steadfast armies soon lose focus and will attempt to dominate and be in control of the Sanguine Obelisk in attempts for unobtainable strength.

Acheron also holds enormous flocks of birds. Ravens, vultures, gulls, blood hawks, and swallows tumble on the wind, sated on the carnage of the many battlefields.

Features
The cubes that make up each of the four layers of Acheron are pitted and scarred with cracks and dents from their many collisions and craters from their many battles. On the orderly plane of Acheron, the cubes always rust or fracture along straight lines and at right angles. Some of the cubes are only a few hundred feet on a side, but others are big enough for whole cities and kingdoms. Geometric shapes other than cubes exist, though they are rare.

Vision is normal on Acheron. The plane is lighted by gray, fluctuating illumination that varies slightly between bright moonlight and a dark, cloudy day. hearing is also normal though the echo of colliding cubes and the ring of battle is always in the background.