The Invasion of Draenor (Warcraft II Exp.: Beyond the Dark Portal)

As the fires of the Second War died down, the Alliance took aggressive steps to contain the orcish threat. A number of large internment camps, meant to house the captive orcs, were constructed in southern Lordaeron. Guarded by both the paladins and the veteran soldiers of the Alliance, the camps proved to be a great success. Though the captive orcs were tense and anxious to do battle once more, the various camp wardens, based at the old prison-fortress of Durnholde, kept the peace and maintained a strong semblance of order.

However, on the hellish world of Draenor, a new orcish army prepared to strike at the unsuspecting Alliance. Ner'zhul, the former mentor of Gul'dan, rallied the remaining orc clans under his dark banner. Aided by the Shadowmoon clan, the old shaman planned to open a number of portals on Draenor that would lead the Horde to new, unspoiled worlds. To power his new portals, he needed a number of enchanted artifacts from Azeroth. To procure them, Ner'zhul reopened the Dark Portal and sent his ravenous servants charging through it.

The new Horde, led by veteran chieftains such as Grom Hellscream and Kilrogg Deadeye (of the Bleeding Hollow clan), surprised the Alliance defense forces and rampaged through the countryside. Under Ner'zhul's surgical command, the orcs quickly rounded up the artifacts that they needed and fled back to the safety of Draenor.

King Terenas of Lordaeron, convinced that the orcs were preparing a new invasion of Azeroth, assembled his most trusted lieutenants. He ordered General Turalyon and the archmage, Khadgar, to lead an expedition through the Dark Portal to put an end to the orcish threat once and for all. Turalyon and Khadgar's forces marched into Draenor and repeatedly clashed with Ner'zhul's clans upon the ravaged Hellfire Peninsula. Even with the aid of the high elf Alleria Windrunner, the dwarf Kurdran Wildhammer, and the veteran soldier Danath Trollbane, Khadgar was unable to prevent Ner'zhul from opening his portals to other worlds.

Ner'zhul finally opened his portals to other worlds, but he did not foresee the terrible price he would pay. The portals' tremendous energies began to tear the very fabric of Draenor apart. As Turalyon's forces fought desperately to return home to Azeroth, the world of Draenor began to buckle in upon itself. Grom Hellscream and Kilrogg Deadeye, realizing that Ner'zhul's mad plans would doom their entire race, rallied the remaining orcs and escaped back to the relative safety of Azeroth.

On Draenor, Turalyon and Khadgar agreed to make the ultimate sacrifice by destroying the Dark Portal from their side. Though it would cost their lives, and the lives of their companions, they knew that it was the only way to ensure Azeroth's survival. Even as Hellscream and Deadeye hacked their way through the human ranks in a desperate bid for freedom, the Dark Portal exploded behind them. For them, and the remaining orcs on Azeroth, there would be no going back.

Ner'zhul and his loyal Shadowmoon clan passed through the largest of the newly created portals, as massive volcanic eruptions began to break Draenor's continents apart. The burning seas rose up and roiled the shattered landscape as the tortured world was finally consumed in a massive, apocalyptic explosion.

Ner'zhul and his followers entered the Twisting Nether, the ethereal plane that connects all of the worlds scattered throughout the Great Dark Beyond. Unfortunately Kil'jaeden and his demonic minions were waiting for them. Kil'jaeden, who had sworn to take vengeance on Ner'zhul for his prideful defiance, slowly tore the old shaman's body apart, piece by piece. Kil'jaeden kept the shaman's spirit alive and intact, thus leaving Ner'zhul painfully aware of his body's gross dismemberment. Though Ner'zhul pleaded with the demon to release his spirit and grant him death, the demon grimly replied that the Blood Pact they had made long ago was still binding, and that Ner'zhul still had a purpose to serve.

The orcs' failure to conquer the world for the Burning Legion forced Kil'jaeden to create a new army to sew chaos throughout the kingdoms of the Azeroth. This new army could not be allowed to fall prey to the same petty rivalries and infighting that had plagued the Horde. It would have to be merciless and single-minded in its mission. This time, Kil'jaeden could not afford to fail.

Holding Ner'zhul's spirit helpless in stasis, Kil'jaeden gave him one last chance to serve the Legion or suffer eternal torment. Once again, Ner'zhul recklessly agreed to the demon's pact. Ner'zhul's spirit was placed within a specially crafted block of diamond-hard ice gathered from the far reaches of the Twisting Nether. Encased within the frozen cask, Ner'zhul felt his consciousness expand ten thousand-fold. Warped by the demon's chaotic powers, Ner'zhul became a spectral being of unfathomable power. At that moment, the orc known as Ner'zhul was shattered forever, and the Lich King was born.

Ner'zhul's loyal death knights and Shadowmoon followers were also transformed by the demon's chaotic energies. The wicked spellcasters were ripped apart and remade as skeletal liches. The demons had ensured that even in death, Ner'zhul's followers would serve him unquestioningly.

When the time was right, Kil'jaeden explained the mission for which he had created the Lich King. Ner'zhul was to spread a plague of death and terror across Azeroth that would snuff out human civilization forever. All those who died from the dreaded plague would arise as the undead, and their spirits would be bound to Ner'zhul's iron will forever. Kil'jaeden promised that if Ner'zhul accomplished his dark mission of scouring humanity from the world, he would be freed from his curse and granted a new, healthy body to inhabit.

Though Ner'zhul was agreeable and seemingly anxious to play his part, Kil'jaeden remained skeptical of his pawn's loyalties. Keeping the Lich King bodiless and trapped within the crystal cask assured his good conduct for the short term, but the demon knew that he would need to keep a watchful eye on him. To this end, Kil'jaeden called upon his elite demon guard, the vampiric dreadlords, to police Ner'zhul and ensure that he accomplished his dread task. Tichondrius, the most powerful and cunning of the dreadlords, warmed to the challenge; he was fascinated by the plague's severity and the Lich King's unbridled potential for genocide.

Icecrown and the Frozen Throne

Kil'jaeden cast Ner'zhul's icy cask back into the world of Azeroth. The hardened crystal streaked across the night sky and smashed into the desolate arctic continent of Northrend, burying itself deep within the Icecrown glacier. The frozen crystal, warped and scarred by its violent descent, came to resemble a throne, and Ner'zhul's vengeful spirit soon stirred within it.

From the confines of the Frozen Throne, Ner'zhul began to reach out his vast consciousness and touch the minds of Northrend's native inhabitants. With little effort, he enslaved the minds of many indigenous creatures, including ice trolls and fierce wendigo, and he drew their evil brethren into his growing shadow. His psychic powers proved to be almost limitless, and he used them to create a small army that he housed within Icecrown's twisting labyrinths. As the Lich King mastered his growing abilities under the dreadlords' persistent vigil, he discovered a remote human settlement on the fringe of the vast Dragonblight. On a whim, Ner'zhul decided to test his powers on the unsuspecting humans.

Ner'zhul cast a plague of undeath - which had originated from deep within the Frozen Throne, out into the arctic wasteland. Controlling the plague with his will alone, he drove it straight into the human village. Within three days, everyone in the settlement was dead, but shortly thereafter, the dead villagers began to rise as zombified corpses. Ner'zhul could feel their individual spirits and thoughts as if they were his own. The raging cacophony in his mind caused Ner'zhul to grow even more powerful, as if their spirits provided him with much-needed nourishment. He found it was child's play to control the zombies' actions and steer them to whatever end he wished.

Over the following months, Ner'zhul continued to experiment with his plague of undeath by subjugating every human inhabitant of Northrend. With his army of undead growing daily, he knew that the time for his true test was nearing.

Meanwhile, in the war-torn lands of the south, the scattered remnants of the Horde fought for their very survival. Though Grom Hellscream and his Warsong clan managed to evade capture, Deadeye and his Bleeding Hollow clan were rounded up and placed in the internment camps in Lordaeron. Notwithstanding these costly uprisings, the camps' wardens soon re-established control over their brutish charges.

However, unknown to the Alliance, a large force of orcs still roamed free in the northern wastes of Khaz Modan. The Dragonmaw clan, led by the infamous warlock Nekros, was using an ancient artifact known as the Demon Soul to control the Dragonqueen, Alexstrasza, and her dragonflight. With the Dragonqueen as his hostage, Nekros built up a secret army within the abandoned - some say cursed - Wildhammer stronghold of Grim Batol. Planning to unleash his forces and the mighty red dragons on the Alliance, Nekros hoped to reunite the Horde and continue its conquest of Azeroth. His vision did not come to pass: a small group of resistance fighters, led by the human mage Rhonin managed to destroy the Demon Soul and free the Dragonqueen from Nekros' command.

In their fury, Alexstrasza's dragons tore Grim Batol apart and incinerated the greater bulk of the Dragonmaw clan. Nekros' grand schemes of reunification came crashing down as the Alliance troops rounded up the remaining orc survivors and threw them into the waiting internment camps. The Dragonmaw clan's defeat signaled the end of the Horde, and the end of the orcs' furious bloodlust.

Months passed, and more orc prisoners were rounded up and placed within the internment camps. As the camps began to overflow, the Alliance was forced to construct new camps in the plains south of the Alterac Mountains. To properly maintain and supply the growing number of camps, King Terenas levied a new tax on the Alliance nations. This tax, along with increased political tensions over border disputes, created widespread unrest. It seemed that the fragile pact that had forged the human nations together in their darkest hour would break at any given moment.

Amidst the political turmoil, many of the camp wardens began to notice an unsettling change come over their orc captives. The orcs' efforts to escape from the camps or even fight amongst themselves had greatly decreased in frequency over time. The orcs were becoming increasingly aloof and lethargic. Though it was difficult to believe, the orcs - once held as the most aggressive race ever seen on Azeroth - had completely lost their will to fight. The strange lethargy confounded the Alliance leaders and continued to take its toll on the rapidly weakening orcs.

Some speculated that some strange disease, contractible only by orcs, brought about the baffling lethargy. But Archmage Antonidas of Dalaran posed a different hypothesis. Researching what little he could find of orcish history, Antonidas learned that the orcs had been under the crippling influence of demonic power for generations. He speculated that the orcs had been corrupted by these powers even before their first invasion of Azeroth. Clearly, demons had spiked the orcs' blood, and in turn the brutes had been granted unnaturally heightened strength, endurance, and aggression.

Antonidas theorized that the orcs' communal lethargy was not actually a disease, but a consequence of racial withdrawal from the volatile warlock magics that had made them fearsome, bloodlusted warriors. Though the symptoms were clear, Antonidas was unable to find a cure for the orcs' present condition. Then too, many of his fellow mages, as well as a few notable Alliance leaders, argued that finding a cure for the orcs would be an imprudent venture. Left to ponder the orcs' mysterious condition, Antonidas' conclusion was that the orcs' cure would have to be a spiritual one.