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==BackgroundHistory of the Great Evils from Sanctuary Onward==

However, it so happened that there were some demons and some [[angel]]s that grew weary of the conflict, and wanted to separate themselves from it. The angel [[Inarius]] and the powerful demoness [[Lilith]] were the first of a small group to become lovers over the borders of Heaven and Hell. They created [[Sanctuary]] as their home, and although created in a vastly different way than [[human]]s procreate, had offspring they called [[nephalem]]. [[Inarius]] used the [[worldstone]] to conceal sanctuary from the eyes of other demons and angels. Fearing the power of the [[nephalem]], he banished Lilith and used the worldstone to tune down the nephalem's power. [[Inarius]] waged an underground war with mephisto's son for control humanity for a while, until the [[nephalem]] somehow gained power and destroyed both factions.

The nephalem became immensely powerful from this union of angel and demon, and the main forces of Heaven and Hell noticed Sanctuaryduring the defeat of [[Inarius]]. Demons and angels alike were afraid to let this new faction power grow aware and strong, and wanted to destroy it. The [[Angiris Council]] with [[Tyrael]] in the lead were prepared to do just this.

The [[nephalem ]] however, proved to be individual and of free will, so in the end, Sanctuary was spared by both races, but only by the aid of [[Tyrael]]s vote on the angel's side. The artefact known as the [[Worldstone]] was once again set to dampen the energy of the nephalem, and eventually it turned most of them to forget their former power, becoming what we call humans today.  ===The Sin War===As soon as [[Sanctuarynephalem]] was revealed, some and they were forgotten with the aid of the battle between [[Light]] and [[Darkness]] took place a mass mind wipe. Evil did not openly act on human soilsanctuary for many more years. This conflict period was to be called known as the [[Sin War]].  The [[Prime Evils]] noticed that while on the [[Sanctuary|mortal realm]], they were cut off from their source of power deep in the [[Burning Hells]]. However, the energy from mortal souls was easily harnessed and could be used in all realms. The almost exact power balance of [[High Heavens|Heaven]] and Hell could thus be overcome by taking control of Sanctuary. An all-out invasion would do no good, however, since the [[Heavenly Host]] would just come down to meet them, and the world would be destroyed.  Instead, the then already corrupted angel [[Izual]] told the Three of angelic [[Soulstone]]s that could be used to channel power from Hell directly. With this force, any battles on the mortal realms would easily be dealt with. They needed to lure the angels to use the Soulstones against them without letting the ruse become obvious.

With minute careful planning, they the [[Prime Evils]] manipulated the [[Lesser Evils]] of [[Azmodan]] and [[Belial]] to revolt against the [[Three]], exiling them on to Sanctuary in a much weakened Spirit form. The angels saw this and assumed the new rulers of Hell would imminently attack the gates of Heaven, so they withdrew their support from Sanctuary, feeling that if the human race survived they might be worthy allies after all.  HoweverWhile there, the angels could not resist the chance of capturing the weakened [[Prime Evils]].  The Three had not heeded Izual's warnings of being weakened on the [[Sanctuary|mortal realmprime evils]], and found themselves shut off from their source of power, draining themselves to just stay alive. They found that this did not happen when possessing a [[human]] body, they retained their power and also managed to accumulate more from other mortal's souls, up to a point of what their host body could hold. Strong minds and bodies were better vessels, but also harder to possess.  With this new knowledge, the Three ravaged the human kingdoms, gathering and using power wildly.

Led by the [[Initiate]]s [[Tal Rasha]] and [[Jered Cain]], the Horadrim found [[Mephisto]] in the [[Kehjistan]] jungles, and managed to capture him within the Soulstone meant for him. He was buried under the [[Temple of Light]] in what would become [[Kurast]] and guarded by a large section of the magi brotherhood.

Jered Cain led the remaining Horarim to the West, and caught up with [[Diablo]] near the river [[Talsande]], who managed to escape from the east. They fought a bitter and hard battle, with heavy losses, but managed to subdue the red lord of terror. He was imprisoned in his Soulstone and buried in caves nearby, whereupon the [[Tristram Cathedral|a Horadric monastery]] was built.

Neither of They slowly corrupted the Three Demon Lords had anticipated not only to be defeated, but be unable to escapesoulstones and the areas around him with effects that are later mentioned.

However, some Some centuries later, after the taskless [[Horadrim]] brotherhood had all but disappeared, [[Mephisto]] managed to reach out to the local [[Zakarum]] priesthood in the now sprawling city of [[Kurast]] and draw them to him. He corrupted the priesthood, council and sent emissaries of Zakarum out into brought the world while he built lands under his power.

Whether or not Lord [[Leoric]], a very well known pious man, came from these expeditions or notis unknown. Regardless, he brought with him the Zakarum religion to [[Khanduras]] from the East, and made himself King with his seat of power in [[Tristram]], the very same location [[Diablo]] was still imprisoned. Diablo tried and to corrupt [[Leoric]]. The attempt failed, but broke his [[Leoric]]'s mind. However, his His Archbishop and advisor [[Lazarus]] was susceptible, and was made to free the Prime Evil, giving corrupted by Diablo. [[Lazarus]] gave him Leoric's only son [[Albrecht]] as a host to possess.

Many adventurers traveled down in the labyrinths beneath the Cathedral in search for fame and fortune, but all died or , fled, or went mad. One day came an unknown man (later confirmed to be [[Leoric]]'s son, [[Aidan]] did manage to reach the deepest parts of the labyrinth and find [[Diablo]] in a section that had already begun to corrupt into a likeness of Hell. The hero [[Aidan]] slew diablo and shoved the diablo's his soulstone into his own head.

[[Aidan]] tried to contain the demon within himself, to bring it to the Eastern [[mage clans]] for a final defeat. However, he could not resist the overwhelming influence of diablo and became the [[Dark Wanderer]].

The Dark Wanderer did indeed turn East, but at this point was corrupted beyond saving as Diablo. Before leaving tristram, it appears that he was with adria the witch [[Adria]] long enough to birth a daughter, [[Leah]], who was important in the futurefor Diablo to return. The demonic decoys did indeed slow slowed down the heroes, and with the help of his companion [[Marius]], the Dark Wanderer managed to free [[Baal]] from his prison in the [[Tomb of Tal Rasha]] despite [[Tyrael]] physically intervening. Tyrael assigned Marius the task of destroying the soulstone, the result of which will be explained later.

===Diablo Returns To Hell===

Despite attempts to stop it, the portal to hell was openedwith the aid of [[Mephisto]], and Diablo went through for an unexplained reason. [[Mephisto]] guarded the portal but was slain by the heros, who went through the portal after Diablo. After opening the 5 seals, the heros defeated Diablo on his own turf. It is unclear if that was part of his plan to become the prime evil, although it is unlikely a demon would plan to be killed twice in under a decade. He was not seen again for 20 years.

===The Worldstone Corrupted===

===Belial and Azmodan Invade Sanctuary=== It is unknown when their activities actually started, but 20 years after the defeat of Baal the [[Nephalem]], who just recently discovered their powers, were informed by a mortal [[Tyrael]] the evils once again walked the world. They also met Decard Cain and Leah. Unfortuinately, Cain was slain by a servant of [[Belial]] named [[Maghda]]. They traveled to Caldeum, where [[Belial]] had already taken over the guard and the palace, as well as the form of the emperor. [[Maghda]] was slain by the [[Nephalem]]. In time, the [[nephalem]] discovered Belial's identity and slew him in the palace. Right before his death, the [[Nephalem]] retrieved the [[Black Soulstone]] with the aid of leah's mother [[Adria]], and [[Belial]]'s soul was absorbed into the stone, along with every other evil but [[Azmodan]]. It appears the others were marked before death.

It is unknown when their activities actually started, but 20 years after the defeat of Baal the [[Nephalem]], who just recently discovered their powers, were informed by a mortal [[Tyrael]] the evils once again walked the world. They also met Decard Cain and Leah. Unfortuinately, Cain ===The Prime Evil===When azmodan was slain by a servant of [[Belial]] named [[Maghda]]. They traveled to Caldeumdefeated, where [[BelialAdria]] had already taken over the guard and the palace, as well as the form of the emperor. In time, betrayed the [[nephalemNephalem]] discovered Belial's identity and slew him. Right before, used the [[Black Soulstone]] was claimed with the aid of leah's mother power to turn [[AdriaLeah]], and into the [[BelialPrime Evil]]'s soul . However, he was defeated while he was absorbed into in the stoneprocess of permanently defeating Heavan, along with every other evil but by the [[AzmodanNephalem]].

* {{iw|Chaos_Sanctuary Chaos Sanctuary}} - The place where [[Diablo]] was defeated in [[Burning PitsDiablo 2]] An area within Hell.* {{iw|Plains_of_Despair Plains of Despair}} - Realm of [[Chaos SanctuaryRakanoth]].* {{iw|City_of_the_Damned City of the Damned}}* [[Realm of Terror]] The place where Diablo was defeated in - Diablo 2's Realm. 

  {{stub|itneeds to be double checked on the lore, and sources added* Levels 13-16 in [[Diablo 1]]. Pictures needed as well}}