Editing Acheron (section)

==Layers==
Acheron is an infinite void filled with floating geometric shapes; at the topmost layer of the plane, these are almost uniformly shaped as cubes each with their own directional gravity and are large enough that entire nations can be housed on them. As you descend the layers the shapes become smaller and more irregular until you get to the bottom layer of Ocanthus, where only things flying around are razor-sharp shards of ice.

Travel is always dangerous, not least because of all of the roving armies that would be happy to conscript a wandering traveler. The cubes/shapes are in constant motion and have a tendency to crash into each other every now and then, squashing any unfortunate who happens to be on the colliding faces unless they had the presence of mind to look up and escape before that happened. Some layers also have other dangerous environmental effects. 

===Avalas===
The topmost layer of Acheron is the battlefield. It contains the largest cubes where armies can claim their territory and space enough for military actions to be fought. Here the sound of battle persists endlessly.

Avalas is also the home of both the [[Goblin]] and [[Orc]] pantheons where they are in constant warfare with one another.

The Goblins inhabit '''Clangor''' which is almost entirely given over to fighting with the Orcs, with caverns filled with Goblinoids of various types as well as Wolves for riding. Depending on your [[Forgotten Realms|perspective]], the Kobold deity [[Kurtulmak]] also makes his home either on Clangor or in [[Baator|Avernus]], though quite possibly the two locations are linked and the Goblins spend as much time fighting the Kobolds as the Orcs. The Hobgoblin deity [[Hruggek]] supposedly resides here but maintains links to the [[Abyss]]. Frequently the [[Blood War]] spills its way into Clangor where the Goblins and Kobolds are happy enough to let it resolve itself while acting in an "advisory" capacity for both sides.

It might seem odd that the typically Chaotic Orcs make their home on a lawful plane, but it's a place of constant battle so it would probably be natural that they would end up there (more likely is that the orcs in 2e, when Planescape was created, were Lawful Evil. It was only in 3e that they became Chaotic.). Also, the presence of the deities cancels out the lawful-aligned trait of the plane, meaning they suffer no penalties. Also ''(at least according to the Forgotten Realms rules, where the cosmological arrangement is different, although it need not be entirely incompatible with core D&D, since cosmological perspectives are often subjective depending on where you start from)'' the Orc realm of '''Nishrek''' is also mildly evil aligned instead of being lawful and also has the mildly-positive trait, meaning dead warriors get up at the end of the day ready to fight again. What's more, inside [[Gruumsh]]'s Iron Fortress any Orc gets damage reduction 25/- which means it is quite possibly one of the most well-defended locations in the entire cosmos outside of Malsheem in the Nine Hells.

[[Hextor]] also made his realm here, called '''Scourgehold''' (which presumably became '''Banehold''' when [[Bane]] seemed to usurp/replace Hextor's position as a god of strife and tyranny during the transition to 4e) which is a place of constant battle replete with siege engines and constantly rebuilt fortifications. If the Bane connection is to be followed, it probably has more in common with [[Hades]] and is less intense with battle, but filled with far more foreboding.
<gallery>
Redspike OHG.jpg|The Hobgoblin city of Redspike, Clangor.
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===Thuldanin===
[[File:thuldanin junkyard DttU.jpg|thumb|200px|An ironically petrified gargoyle in one of the many junkyards of Thuldanin]]
The next layer is made up of slightly smaller cubes than Avalas, and it is the scrap heap of the multiverse. Lost or forgotten objects find their way here, and scavengers can make a living for themselves by collecting hidden treasures or technological devices which end up here, but mostly this is a place for the refuse of every war that was ever fought, so the place is entirely littered with broken siege engines or weapons whose owners perished and would never need them again.

There are very few inhabitants on Thuldanin and even among those there are likely to be virtually no permanent residents at all. This is entirely because the layer has a quality that petrifies objects and creatures which remain on the plane for too long; for every thirty days spent in Thuldanin, there is a 1% chance of spontaneously turning to stone. There is no proof or protection against this, and there is no reversal of this petrification short of ''Wish'' or ''Miracle'' spells either, but travelers can [[Rules Lawyer]] themselves around this by spending 29 days in the layer, then leaving for a day and coming back afterward.

It's also part of the reason that simply searching through the scrap piles is not as lucrative as you might think, because all of the older objects will have been turned to stone themselves, rendering them useless. But that's not to say a scavenger won't get lucky, or find something that can't be copied.

One of the few native inhabitants are rust dragons, which scrabble cockroach-style over the debris. [[Rust Monster|They can corrode and consume metal]], which makes any scavenging trip even more hazardous.

The [[Duergar]] God '''Laduguer''' makes his home here in a fortress made entirely of leftover debris from war; even the walls are made up of shields stapled together. Obviously he can negate the petrification effect because he is a deity.

===Tintibulus===
As one descends down the layers into the plane, the floating objects get smaller and more irregular. Within Tintibulus, other odd shapes outnumber cubes in contrast to Avalas. Travel here is particularly perilous because collisions between objects occur with far more frequency, to the point that the sounds of battle typically audible throughout Acheron is entirely drowned out by the banging and crashing of the floating shapes floating into each other. A layer of thick dust covers many objects, at least partly from other objects that shattered on impact.

What passes for inhabitants are various mages who stay to either stash their libraries behind abjuration spells or research in another's - the constant battering of celestial objects is apparently seen as the ultimate robbery deterrent. Tintibulus is considered a good place for magical research among casters who can survive there.

===Ocanthus===
Unlike the rest of the plane, Ocanthus is not a void filled with floating shapes but rather a single immense frozen floor. As mentioned earlier, some believe the ice to be the destination of the river Styx. It is not known if the ice is simply the "end" of the plane, or if there is anything buried underneath it-- or even if the ice block really infinite at all or whether it is just another floating cube that nobody has bothered to circumvent to find out what's on the other side. Regardless of what might truly be the case, lets just say the ice block is inconceivably huge and leave it at that.

Traveling the surface is dangerous because the only other objects that float around here are tiny shards of broken ice which whip up in storms of blades, each striking with the force of a greatsword that ignores any form of damage reduction.

The only permanent inhabitants of this layer are the [[Bladeling]]s in their city of '''Zoronor''' which is protected by from the flying razors by a forest of magical trees, but they are entirely [[Imperial Cult|xenophobic]] and won't take kindly to unexpected visitors. Anyone else living here will be servants of whichever deities who have chosen to make their realms here, because deities can control their surroundings and impose whichever effects they wish: one such deity is [[Wee Jas]] who maintains the '''Cabal Macabre''', a castle of black ice. Wee Jas is said to walk the sheet of Ocanthus searching for lost memories of magical power or dying moments, but occasionally she brings back mortals kidnapped from other planes who inevitably die for failing to pass her tests. Simply put, Ocanthus is inhospitable; if the inhabitants don't kill you, the ice storms simply destroy any mortal attempt at erecting shelter, then cut to pieces any idiot still out in the open.