The Night Shade of Greyhawk and the Hallowed Revenant Amphoras
All are equal in Nerull's cold realm. Every living
thing is an affront to the Reaper, and every death brings
a dark spark of joy to his long-dead heart. Those who
pray to Nerull to appease him only attract his attention
and their own doom. Those who kill in his name shall
Nerull is usually seen as a black-robed skeleton, with a rust-red body and green, ropy hair. He carries a staff called "Lifecutter" that at his command grows a scythe blade made of scarlet energy. His alignment is Neutral Evil. Nerull is the patron deity of those who seek the greatest evil for their own enjoyment or gain.
Among the Bakluni, Nerull is known as Tharoth the Reaper (This is unofficial Oerth Journal material). He is viewed in this context as a servant of Istus, in charge of ending mortal lives upon her command.
Nerull has tenuous alliances with Faluzure and Hextor. He respects Incabulos, who starts the work that Nerull completes, but has nothing to do with him; their priests do not cooperate unless faced with a common enemy. The Foe of All Good sponsored the ascension of his mortal follower Kyuss to godhood. He seeks to destroy and reabsorb the power of Mellifleur, who stole divine energy meant for one of Nerull's own servants. Oddly, Nerull is on neither good, nor bad terms with one of his few competitors: Wee Jas.
Nerull is said to slay Obad-Hai every winter.
Nerull dwells in Carceri, either in its outermost layer or its innermost. According to On Hallowed Ground, his realm is called the Crypt and is a city inhabited by the dead and undead. There, Nerull consorts with fiends of all kinds, who wander the realm devouring the shrieking souls trapped under Nerull's power. According to the 3rd edition Manual of the Planes, his realm is Necromanteion, described as a citadel carved from black ice, where the souls of the dead are trapped within the walls, ceilings, and floors. Demonic clerics perform twisted experiments and recite ghastly litanies. Nerull's throne is within a wide hall called the Hidden Temple, and even more unspeakable horrors are said to be buried in tunnels beneath.
Unlike most inhabitants of the Red Prison, Nerull wasn't banished to Carceri; he lives there because he likes it.
Nerull's faithful believe they will be rewarded for acts of murder, for every living thing is an abomination in the eyes of the Reaper.
Nerull is the patron deity of those who seek the greatest evil for their own enjoyment or gain. Most common folk do not worship or propitiate him, although they fear him greatly. It is believed that any form of appeasement will merely draw his attention, something that is at all costs to be avoided by the sensible. Nerull seems, in fact, to draw power from the very avoidance of his name. Some of the peasants of the former Great Kingdom do propitiate Nerull with minor rites, begging safe passage for the souls of the dead. Among the Flan and in the Old Faith, Nerull is sometimes considered to be the god of winter.
The Reaper is one of the patrons of the Horned Society and the White Kingdom, and thought to be the will that animates the drowned ones.
Nerull's clerics are feared throughout the lands as cold, calculating murderers. Named clerics of He Who Revels in the Slaying of the Living include Delglath, Jipzinker, Andrade Mirrius, Guiliana Mortidus, and Nezmajen. They are secretive and often solitary. When not in disguise, they dress in the same rust-red hue as the bones of their god.
Those who would become priests of Nerull must undergo an arduous initiation that climaxes in being buried alive for a time.
Nerull's temples are hidden and usually subterranean except in the most evil lands, as befits the god of darkness and the underworld. One place vile enough to openly host sizable temples of the Foe of All Good is Rel Astra. Well known cults of Nerull include the Shriven Sickle in Greyhawk, which seeks, among other things, to undermine the church of Saint Cuthbert there. The Midnight Darkness, active in the former Aerdy lands, is led by a mysterious figure known as the Hidden Sickle. In the Hold of the Sea Princes, cultists of Nerull made it their goal to frustrate and destroy Jeon II. This cult has recently been responsible for a series of extremely mysterious, grisly, and above all scary murders of various servants of good; apart from this they've kept themselves extremely secretive.
Services to Nerull are ghastly things performed in absolute blackness, featuring litanies of fear and suffering. Murder is done as an homage to the Reaper.
Nerull has few known holy days:
The Blood Moon Festival. This night, on Coldeven 11, is particularly sacred to Nerull.
Relics associated with dread Nerull include the Mace and Talisman of Krevell, named for one of his most infamous priests.
Myths and legends
When the Oerth was still young, beings from the Far Realm attempted to assert dominance over all reality. They sent minions to destroy the newly sentient, pre-human life that then lived on the surface of the world. Four gods rose to oppose this: Pelor, Obad-Hai, Nerull, and Kord. Pelor and Nerull had yet to form allegiances to Good or Evil in those days; they were most interested in maintaining the balance between Law and Chaos. Kord was just along for the sake of having something to fight. The four gods each sacrificed a part of their power to create an anchor that would sever the ties of the invaders to their unguessable masters, and so were able to defeat them.
The Sorcerer-Queen known as The Raven Queen led a rebellion of tormented souls, slew Nerull, and claimed his portfolio.