Timeline
During the First WarThe Apprentice and the Tower
Khadgar arrived at Karazhan hoping to learn from Medivh. Earning a place required practical work as well as magical talent, and the tower itself presented unsettling visions that did not belong to the present.
The arrival of Garona challenged his assumptions about the enemy beyond the tower. Distrust gave way to cooperation as they faced danger together and compared what they knew. Their questions began to point toward the man who had admitted them both.
Khadgar’s investigation revealed a connection between his master and the Horde’s arrival. The education he had sought now required a decision about loyalty: protecting his teacher meant ignoring a danger to everyone outside the tower.
Sources (1)
Before the fall of StormwindThe Master Behind the Gate
Khadgar and Garona escaped to bring their discovery to Lothar. He returned with them to confront his old friend Medivh in Karazhan. The source of the invasion was also a man they had trusted.
The Guardian’s magic overwhelmed them and drained Khadgar’s youth. The apprentice nevertheless drove a blade into his master; Lothar delivered the final stroke as Sargeras tried to emerge. Medivh’s death ended the possession, not Sargeras’s existence.
Gul’dan, searching inside Medivh’s mind, fell into a coma when the link was broken. Beyond the tower, the Horde remained in Azeroth. Stopping the architect of the betrayal could not undo an invasion already in motion.
Sources (1)
At the end of the Second WarStone Broken, Rift Remaining
The Alliance’s victory carried the grief of Lothar’s death with it. Pursuing the defeated Horde led the army toward the Dark Portal, the structure that had made the invasion possible.
Khadgar used his magic to destroy it. The visible gateway collapsed, and the campaign could appear to have reached its conclusion. Yet destroying the frame had not severed the connection between the two worlds.
That surviving rift made vigilance necessary. Nethergarde Keep was established to watch the site, but the quiet that followed was not proof that Draenor could never reach Azeroth again.
Sources (1)
Before the Alliance expeditionThree Relics for Another World
Ner’zhul sought a future beyond a ruined Draenor. His forces reopened the Dark Portal with the Skull of Gul’dan, then entered Azeroth to obtain tools for a different set of gateways.
The targets were the Book of Medivh, the Eye of Dalaran and the Jeweled Scepter of Sargeras. Together with a coming celestial alignment, they offered the means to reach other worlds.
The Alliance learned that the raids were preparations for further invasions. Khadgar joined the expedition through the portal to stop the plan at its source. The defenders of Azeroth were now advancing into the homeland of the enemy.
Sources (2)
During the pursuit of Ner’zhulThe Dragon and the Skull
Following the stolen relics forced the expedition to divide. Ner’zhul had handed the Skull of Gul’dan to Deathwing, separating it from the book the pursuers also needed. Khadgar, Turalyon and Alleria went after the dragon.
In the lands that would become part of Outland, the dragon’s brood had enemies of its own. The expedition found an opportunity in that conflict. Khadgar could not simply overpower Deathwing, but he could interfere with the armor holding the dragon’s damaged body together.
The resulting pain forced Deathwing to retreat and left the skull behind. Possessing it brought temptation as well as a practical advantage. Khadgar rejected its offer of power and returned to the urgent work of stopping the portals.
Sources (1)
c. 8 ADPThe Shattering of Draenor
Khadgar and the expedition reached Ner’zhul too late to prevent the ritual. The Book of Medivh, Eye of Dalaran and Jeweled Scepter had served their purpose. Portals opened across Draenor, but their instability began tearing the world apart.
Ner’zhul escaped through a rift, abandoning those behind him. Khadgar recovered the book and used its knowledge with the Skull of Gul’dan to close the Dark Portal. The expedition stayed beyond it so the catastrophe would not spread into Azeroth.
The survivors endured the upheaval and returned to a shattered landscape: Outland. Their sacrifice had protected their home while cutting them off from it. On Azeroth, those who did not know they had survived remembered the missing expedition as heroes lost beyond the gate.
Sources (4)