Shavarath, the Perpetual Battleground

Shavarath the Perpetual Battleground is a plane ever gripped in the throes unending of war as three groups vie for control of the plane, a host of celestial archons, an infernal regiment of devils and a swarming horde of demons. Some researchers predict that Shavarath sits at the heart of Siberys, and that if any group ever gained fill control of Shavarath, they would gain control of the powers of creation or destruction.

Description
Forever in a rough balance of power each of the three factions lay siege to one another's fortresses only to lose their own holdings on other fortresses in the process. Beyond these fortresses, the non-descript plain stretches infinitely, with low hills and valleys providing the only terrain feature. The plane is aligned by territory, with those areas held by the archons are mildly good and lawfully aligned, those areas held by devils are mildly evil and lawfully aligned, and those held by the demons is mildly chaotic and evil aligned. Magic spells that mimic, create or enhance weapons as well as spells that excite hostile emotions are extended, while charms and pacifisms are impeded.

When spellcasters summon demon or devil servants, they most often summon them from their fight on Shavarath.

Inhabitants

 * To the few brave enough to visit, the most threatening of the "inhabitants" of Shavarath are the Whirling Blades. These blades travel like flocks of birds, flying across the plane instinctively attacking non-natives of Shavarath. Large congregations of Whirling Blades can become Shredstorms that dominate the landscape.
 * The first of three major factions of Shavarath are the archons, including hound archons, justice archons, trumpet archons, and word archons.
 * The second faction are the devils, which include barbed devils, bearded devils, bone devils, chain devils, erinyes, horned devils, imps, and whisper devils
 * The third major faction are the demons. Known demons on Shavarath include arrow demons, babaus, carnage demons, dretchs, gadacros, glabrezu, hezrou, mariliths, quasits, retrievers, and solamiths.
 * Other creatures scour the Battleground, including bladelings, spikers, and vargouilles.
 * Like most planes, Shavarath also has its share of undead, including deathshriekers

Manifest Zones

 * The Ash Tower, a crumbling spire in the southwest of the Mournland, is at the center of a manifest zone to Shavarath.
 * The Fields of Desolation on the Talenta Plains not far from Karrnath is noteable for being the smallest of the manifest zones ever discovered, only a hundred square yards.
 * The Jungle of Scimitars, or Ravar Orioth in Valenar, has been used as a testing ground for elven warriors for many decades.

Coterminous
In times of conflict, when Shavarath draws near to the Material Plane, the effects spill over into it. Legends tell of leaders drawn quickly to anger and wars started for little or no reason. Magic spells are enhanced or impeded as they are on the Battleground and reports have even come of flocks of Whirling Blades seen on the battlefields.

Because of Shavarath's influence on Eberron, many scholars have tried to pinpoint its travels through the Astral Sea, to determine its influence on the Last War. One set of scholars believes the plane was coterminous in 894 YK, the year the war began, bringing it back into a coterminous phase in 930 YK and 966 YK. However, the masters at Arcanix insist that it was coterminous in the years 890 YK (before the war), 936 YK, 962 YK, and should appear again in the year 999 YK.

Remote
When Shavarath is remote, no known effects manifest on the Material Plane.