Orcs (AKA Or'k, Ork) are strong and nasty humanoids from Azeroth.
The orcs of Draenor had lived in a noble shamanistic society, roaming in tribes the grasslands of Nagrand on their dusty world of Draenor, for over 5,000 years. They lived in peace with the draenei and were at war with the . Eventually, the presence of the draenei drew the Burning Legion to Draenor. After investigating of the world, the powerful demon lord Kil'jaeden tricked the respected shaman Ner'zhul into striking a bargain with him. He convinced Ner'zhul that the draenei were conspiring against the orcs, and were planning on attacking. In exchange for their service to the Burning Legion, Ner'zhul and all of the orcs would receive the power necessary to conquer vast new lands, and Kil'jaeden would have an army able to crush the draenei. To obtain this power, the orcs would need to first drink from the blood of Mannoroth the Destructor, a mighty pit lord of the Burning Legion. Grom Hellscream was one of the first to drink, and easily convinced the other chieftains and their clans to follow suit. This put them under the Blood Curse.
The Rise of the HordeEdit
With the mass murder of the draenei, the elements refused to aid the orcs in their war. Believing that the elements had turned on them, the orcs turned to Ner'zhul. Gul'dan was then introduced as the new leader of the Horde. Slowly the entire race was corrupted into rampaging clans that would later be forged into the Horde. Over the next few decades the draenei and many other indigenous races of Draenor were almost utterly destroyed. Completely devoured by their demonic bloodlust and without new enemies to fight, many orc clans began fighting amongst themselves. Petty rivalries escalated into full scale bloodbaths, and total chaos descended upon orcish society. The few remaining draenei took advantage of this and started a guerrilla campaign that continues to this day.
Gul'dan gathered all warlocks who shared a desire for ultimate power and attempted to the share knowledge of communing with the dead. Many died in the process, but the few who survived formed the initial ranks of the Shadow Council. Through careful manipulation and intricate machinations, the Shadow Council became the real ruling body of the Horde, with the clan chiefs under their thumbs. By using the promise of new lands to conquer on worlds other than Draenor, the Shadow Council was able to form a tenuous unity within the Horde. Gul'dan and his warlocks began probing the Twisting Nether, desperately searching for new worlds within easy reach before the clans' bloodlust exploded beyond control. Gul'dan also founded the schools of Necromancy to spread the new demonic magics to even more orcs.
Visions of MedivhEdit
One night, an extremely powerful entity touched the thoughts of many orc warlocks. Gul'dan sought the advice of Kil'jaeden as to what this new presence might be, but his summons went unanswered. If Gul'dan's own tutor Kil'jaeden feared this entity, then it could prove to be a powerful tool if he could re-establish contact with it. Weeks later, Gul'dan was finally successful and opened up communication with Medivh, a sorcerer on some distant world. Gul'dan attempted to probe the designs of this Medivh, but Medivh's mind moved far too quickly for Gul'dan to discern much of any value. Gul'dan knew with near-certainty that Medivh was attempting the same, and did not want Medivh to gain an advantage, and so quickly broke contact.
Medivh later returned to the dreams of the warlocks on Draenor, presenting them with images of the land of Azeroth. The Shadow Council, despite the debate over Medivh's true intentions, decided to do Medivh's bidding if he could furnish a way to bring the horde into Azeroth. Those warlocks who were not members of the Council but had experienced the vision, were killed to keep the coming invasion secret. Weeks passed with no further word from Medivh and some members of the Council believed he was playing tricks on them. But then the rift appeared.
The Invasion of AzerothEdit
With time and much effort the orcish warlocks were able to expand the rift enough to allow orcs to squeeze through. Though their first scouts were driven mad, either by the rift itself or by what they had seen, the council was able to confirm that on the other side of the rift was the world Medivh had shown them. A small contingent of orcs was sent through the stabilized rift, now known as the Dark Portal to scout and construct a base of operations.
The caution urged by the Shadow Council fell on deaf ears when the clan chieftains learned of how seemingly weak the native humans of the area were. Bloodlust soon overcame the Horde, and they launched a preemptive strike against the most powerful establishment of humans in the area, the Kingdom of Stormwind. Lead by Cho'gallof the Twilight's Hammer clan and Kilrogg Deadeye of the Bleeding Hollow Clan, this attack ended in a humiliating defeat for the Horde. Each chieftain blamed the other for this failure, and the Horde split into two factions. The Shadow Council attempted to reunite the Horde, but could not act directly, and so they chose an avatar to act as their puppet ruler: Blackhand the Destroyer was named Warchief of all the Horde once again.
Under Blackhand's iron fist, order was restored. It was then that Medivh once again made contact with Gul'dan. Medivh seemed even more powerful, but less sane. Medivh ordered Gul'dan to have the Horde destroy the Kingdom of Stormwind, and make Medivh the new ruler of the humans. Gul'dan initially refused to do Medivh's bidding; after all, the Horde had a new target and Medivh's usefulness, in Gul'dan's eyes, had run out. Desperate to see his plans succeed, Medivh tempted Gul'dan by promising to reveal the location of the Tomb of Sargeras, the lord of the Burning Legion and Kil'jaeden's master. And so the First War between the Horde and the humans of Azeroth occurred, ending with the destruction of the Kingdom of Stormwind.
Near the beginning of that conflict the Frostwolf Clan, one of very few clans of orcs that had rejected the demonic gifts of Kil'jaeden, was exiled to Azeroth and its leader Durotan was murdered by Gul'dan's forces as a warning. His infant son was left for dead but was taken in by a nobleman from Lordaeron fleeing the carnage of Stormwind. The Frostwolves, leaderless, fled to the far northern mountains. Toward the end of the war, a surgical strike was launched by the humans to kill the treacherous Medivh. As Medivh was assaulted, Gul'dan felt the psychic trauma waves that Medivh emanated and realized that his chance to obtain the power of Sargeras was about to slip out of his grasp. He entered Medivh's mind and attempted to steal the location of the Tomb of Sargeras while Medivh was weakened and distracted. It was at this moment that Medivh died, and Gul'dan, having been in his mind at the time of death, was thrown into a coma.
When he awoke, Gul'dan learned of a major power shift within the horde. Blackhand the Destroyer had been overthrown by Orgrim Doomhammer after he had learned of Blackhand's role in corrupting the Horde. Doomhammer was not as gullible or easily swayed as Blackhand had been, and quickly discovered the Shadow Council's presence in orcish affairs. He completely eradicated the Council through accusations of treason. Gul'dan survived only by 'swearing' allegiance to Doomhammer, and by promising to provide a vast undead army for the Horde's use. He formed the Stormreaver clan and began the process of re-animating the corpses of fallen knights with the spirits of the fallen members of the Shadow Council.
These new Death Knights, along with other fel projects(such as the capture of the Alexstrasza), gave the Horde enough strength to advance steadily north despite facing the might of the unprecedented Alliance of all the human nations (Lordaeron, Stromgarde, Kul Tiras, Gilneas, Alterac and the magical forces of Dalaran). The elven nation of Quel'Thalas sent support to the Alliance, and after the Horde took their beloved lands of Khaz Modan, the dwarves and gnomes gladly joined the ranks of the Alliance. When the Kingdom of Alterac betrayed the Alliance, the victory of the Horde seemed inevitable, but the Horde was to suffer a betrayal of their own.
With victory in sight, Gul'dan convinced Cho'gall of the Twilight's Hammer clan that he knew the location of the Tomb of Sargeras. Together, along with the Stormreaver clan, they abandoned their posts and set out to claim the demonic power for their own. This loss of nearly a third of the Horde brought their campaign to a standstill at the doorstep of Lordaeron. Doomhammer, furious with the insubordination at such a critical time, deployed a large portion of his own forces to attack the deserting clans and their leaders. This allowed the Alliance forces to rally and crush the Horde while they were divided. With the destruction of the Dark Portal the Second War ended. Although a number of powerful men in the kingdom of Lordaeron wanted the orcs rounded up and executed, King Terenas Menethil ignored them and had the orcs placed in internment camps with hopes that they would one day lose their bloodlust. There, cut off from their demonic rulers and with no way to replenish their fel stamina, the orcs languished and eventually slipped into lethargy.
Thrall knew the human nations would not stand idly by and let the Horde regroup or settle down. Fortunately for Thrall, a prophet appeared in the form of a raven and advised him to leave Azeroth for the distant land of Kalimdor. Thrall, having no better alternatives, captured some human ships and set sail for the new land, taking all of his orcs out of Lordaeron. During the journey, the orcs helped a tribe of trolls escape from their sinking island. The Darkspear trolls were immensely grateful for Thrall's assistance and swore allegiance to his new Horde. When they arrived in Kalimdor, they were greeted by Cairne Bloodhoof and his tauren. The orcs helped Cairne fend off the centaurs, and in return, he told the orcs the location of the Oracle. The Warsong clan however, was sent to Ashenvale to cut lumber as punishment for attacking the humans without permission. There they battled the night elves. The pit lord Mannoroth took advantage or the fact that the orcs were losing to empower them with his blood, and thus bring them back under his control. Thrall allied with the human sorceress Jaina Proudmoore at the indication of the Prophet (who was actually Medivh). They captured Hellscream and turned him back to normal. Thrall then went with him to confront the Mannoroth. Mannoroth quickly subdued Thrall, but Grom was able to kill the demon, though it cost him his life, and free the orcs from their demonic master.
The founding of OrgrimmarEdit
With the Battle of Mount Hyjal over, and with it the immediate threat to the world, Thrall set out to found the new orcish homeland in Kalimdor. He named the land Durotar in honor of his father, and founded the city of Orgrimar in honor of Orgrim Doomhammer. With the orcs' new allies, the tauren, becoming part of the Horde and with the support of the Lordaeron survivors led by Jaina proudmoore, Thrall was able to build quickly. However, this was not to last. Grand Admiral Daelin Proudmoore Jaina's father, arrived in Kalimdor (having left before the war was over to look for any surviving forces) and launched an attack against the fledgling orc nation. During the initial assault the Darkspear trolls lost their new home on the Echo Isles and with the help of the Mok'Nathal half-orc Rexxar came to live with the orcs in Durotar. The witch doctor Vol'jin pledged the tribe's eternal allegiance to the Horde in return.
Thrall, not knowing what humans had attacked him, initially suspected Jaina's forces, but her loyalty was proven when she helped the orcs destroy the invading forces of her father Admiral Proudmoore.
Orcs have a hatred to anything weak, such as humans, elves and some dwarves. Orcs are constantly at war with other factions or races. They absolutely hate nature and make they're peons and workers cut trees down for shelter.
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