Diinkarazan

Diinkarazan was a lost demigod of the derro and twin brother of their main deity, Diirinka. Known as The Mad God, he was trapped in the Abyss and tormented by nightmarish visions as punishment for both his and his brother's crime.

Description
Diinkarazan appeared as a gaunt, derro, making him tall by that race's standards. He had a staring, insane face, the most notable feature of which being his black-pupiled, glowing red eyes. Gusts of wind constantly swirled around his presence and his hair was always streaming out behind him whilst changing color, texture, and straightness at random.

Personality
Diinkarazan spent the vast majority of his time trapped in a tortured state of perpetual, raving insanity. On the rare days he was reprieved of this condition, a sane Diinkarazan was no less of a homicidal maniac than before, his lucidity doing little to stem his murderous intent. The vengeful deity was abandoned by his own kin and felt betrayed by his people, and so desired the destruction of the derro.

However, just because he was insane didn't mean he couldn't feel fear; drowning (whether in water or lava), certain horrible monsters and the illithid deity Ilsensine were among his worst fears.

Powers
Physically, Diinkarazan's avatar wasn't particularly strong; though it was a capable rogue, it carried no weapons, fighting in melee using its bare hands. What truly make Diinkarazan dangerous was his power as a wild mage, although unfortunately for him, he essentially had zero control over it. Though he knew evocation, and abjuration spells of the highest order, Diinkarazan's actual power was always in a state of dramatic flux, going anywhere between the incredible arcana of a master spellcaster to the feeble magic of a rookie from minute to minute at complete random.

Similarly, Diirinkazan's other abilities weren't so much activated as they were triggered. Attempts to detect the thoughts of The Mad God universally ended in insanity, and there was an about one in four chance that any spell cast on him that he couldn't resist would be reflected back to the caster, whether he wanted it to or not. He could employ a variety of spell-like effects by employing the wind around him, including whispering wind, feather fall, gust of wind, wind wall, wind blast or stinking cloud, but he had no control over which ability manifested and each was just as likely to occur as another.

Divine Realm
Despite technically being an Abyssal lord, Diinkarazan's realm in the Abyss, the 586 layer, was not his domain as much as it was his prison, hence its moniker. The complex curse keeping him there could only be broken by a greater god, although once every fifty years, give or take 1-10 more, he became sane for a day.

The Prison of the Mad God consisted of a perpetually swirling vortex of air, gas, and rings of flying rocks, at the center of which was a stone throne Diinkarazan was bound to where he was tormented with images of things he feared. The distance between places in the realm was constantly distorted by 10-80% on a minute-by-minute basis, and the entire layer was also dimensionally unstable. The realm was being torn between Carceri and Pandemonium by it's imprisoning and maddening qualities, the balance between the two elements keeping it from slipping into one or the other and keeping it in the Abyss.

Activities
Though trapped on his plane, Diinkarazan was still capable of killing visitors, though he was just as likely to do so when he was sane. On whatever day the mad god was able, he sent an avatar to the Prime Material Plane to stalk and destroy entire derro communities. This obsession with revenge at the cost of all else frequently ensured the destruction of his avatar, since its genocidal but at least somewhat meditated actions often degenerated into a spree killing until it was eventually destroyed.

Relationships
Diinkarazan and his twin brother were perhaps the least respected of the dwarven gods. Even the avaricious Abbathor, despite being distrusted and disliked by the other members of the Morndinsamman, was considered a member of the pantheon. Even Laduguer and Deep Duerra were at least considered members-in-exile, still acknowledged by the dwarves and Laduergar's leave being debatably mutual. Diinkarazan and Diirinka were not just banished but completely disowned, the most commonly given reason by Moradin being that both were irredeemably evil, though while true, it's also possible that fear and jealousy of their magical powers played a part in the consensus.

The twins were thought to be children of a dwarven god that was a lesser deity at the time of their conception, possibly even Moradin himself, although this was unclear. While Diirinka had betrayed his brother, he showed clear signs of self-loathing, and possibly felt guilty for having done so.

Diinkarazan was an enemy of many gods outside of the dwarven pantheon for unknown reasons, including the elven god Shevarash, the deep gnome god Callarduran and the entire Dark Seldarine (counting Eilistraee). Ilsensine was allegedly the one that had sealed Diirinkazan in the Abyss, supposedly for trying to steal her magic items.

Worshipers
Before his fall, Diinkarazan was the patron of the city of Korolnor.

History
Diinkarazan was among the oldest of the dwarven gods. He was the patron of Korolnor, one of Deep Shanatar's kingdoms. The faith was abandoned after the Spawn Wars.

At some point in history, Diinkarazan and his brother Diirinka came up with the idea of creating their own dwarven subrace to increase their power, one that was dexterous and adept at magic&mdash;traits not possessed by other dwarves&mdash;and started to explore the Underdark for the means. They found a cavern full of raw elemental energy and artifacts, which they tried to take but were then discovered by Ilsensine. Diirinka backstabbed his twin and fled with the magic while Diinkarazan was captured and imprisoned by the mind flayer deity. Since then, his activity consisted solely of sending his avatar to the Material Plane on a killing spree.

Diinkarazan could channel parts of his powers through the Throne of the Mad God, the old throne of the monarchs of Korolnor, and direct trolls of Stommheim to fight for surface territory and Underdark territory against the mind flayers of Oryndoll. Derros were drawn to his worship and since the Time of Troubles his power was again on the rise.