Out With the Old
Chernoggar, the Eternal Battlefield — home to Gruumsh (on Nishrek) and Bane
Chernoggar is quite similar to Acheron, save for its origin and alignment allegiances. Generations ago, what is now known as Chernoggar was two realms, Acheron, ruled by Bane, god of war, and Nishrek, ruled by Gruumsh, god of destruction. But after the Lattice of Heaven was sundered, Gruumsh took to opportunity to merge his plane with Bane’s allowing the howling savages of Nishrek to invade Acheron, which is the beginning of Gruumsh’s attempt to seize Bane’s title as god of war. So far, however, the two forces seem to have more or less reached parity, with neither gaining much more or less than it subsequently loses or recoups.
Optional Rule: Bloodlust:
The essence of Acheron is destruction and violence, and the plane rewards both by providing successful warriors with the strength to keep fighting. Whenever a creature reduces a hostile creature’s hit points to 0, victor receives temporary hit points equal to half its hit point maximum.
Chernoggar is divided into four layers. These are not strict divisions so much as generalities; each “layer” of Chernoggar can be physically crossed to reach the next. Shapes exemplary of one layer occasionally drift into the next. Once, both Acheron and Nishrek were stable realms, but the collision of the two realms shattered them, tearing both realms asunder, and the constant collision and sundering of the cubes and other massive fragments of Chernoggar not only represent the realm’s efforts to reassemble itself, but also recapitulate the cataclysm that birthed the hybrid realm.
The uppermost, Avalas is composed of massive cubes, most of them iron, which often crash together. These cubes are covered and riddled with mustering armies, fortresses, and the bulk of Bane’s forces, and the location of his fortress, Tuer-Chern. Here the massive floating landforms that make up the realm have the most regular shape, and their motions are most predictable. When cubes collide, they tend to crack along perpendicular faults and split into smaller cubes.
The next layer, Thuldanin, is the primary battlefield of the two gods. The cubes here often heavily rusted or else composed of stone instead of iron, and are pitted and cracked, with huge armories, catacombs, fortresses, labyrinths, garbage dumps, and graves all dug out of them. Their structure is far more compromised and their movement through the airy void less predictable. When they collide, they often crack into irregular shapes or shatter entirely. Nothing lives here for long, and those who try have a tendency to slowly turn to stone or rust, and thus be reclaimed into the mass of the cubes.
The third layer, Tintinibulus, is where Gruumsh resides. The “cubes” here are not cubes at all. Most of the major masses still assume roughly regular forms, but the chaos Gruumsh embodies causes the forms to vary, assuming spheres, tetrahedrons, dodecaherdons, octahedrons, plus a huge number of irregular fragments, the detritus of collisions from this and other layers. The masses “native” to this layer tend to be volcanic rock, and everything in the layer is coated with dust and ash over time. Gruumsh’s fortress is on a large, irregular island, the largest single remnant of what was once Nishrek (the rest is scattered across the plane in a variety of geometric forms)
The fourth layer, Ocanthus, is the true graveyard of Chernoggar. All the shattered, broken remnants of the landmasses of the previous layers fall here, bringing with them piled corpses, machines of war, and in some cases still-warring combatants, all fall into his layer. The fragments in this layer move more rapidly and chaotically than in any other layer, and are mostly irregular in form. Razor-edged plates of metal, volcanic glass, and black ice glide through this layer, some as small as a coin, some as large as a nation,
The Outsider Question. Few outsiders wait at the shores of the color sea of Chernoggar. Most of the faithful of Gruumsh who find themselves thus exiled are not the sort to wait patiently to be noticed. They either embark on some rampage across the Astral Sea (either out of anger or a desire to prove themselves) or else they are finally disillusioned with the God of Destruction’s ethos and move on. The faithfol of Bane are more likely to remain out of a sense of loyalty, and sometimes attempt to fortify islands within the scarlet sea. However, they tend to be sparse and ill-equipped, and relatively defenseless when horde of Gruumsh’s exalted emerge from the portal to wipe them out.