Robbie was quite surprised to have captured Gul'dan; it was an unexpected gain.
After the beam of light shone down, Robbie's instinctive reaction was that Gul'dan must have a way to escape, so he used the Eye of C'Thun to monitor him and witnessed him abandon his Fel Body and become Restless Souls.
That moment of ferocity and determination left a very deep impression.
Afterwards, Gul'dan escaped and became a Ghoul, remaining under Robbie's watchful eye.
According to historical records, Gul'dan should have died at the Tomb of Sargeras. This fleeting moment of glory will likely not be recorded in history and will disappear with the fall of Karazhan.
Robbie's original plan was to eliminate the Ghoul Gul'dan and remove the threat forever, but he didn't expect to attract such a big fish instead.
The two Gul'dans from different periods have merged, and once this period of weakness passes, their strength will undoubtedly increase significantly.
Based on the timeline, not long afterward, Gul'dan's strength suddenly increased, easily defeating Grom Hellscream, subduing Kilrogg Deadeye, and regaining control of the Iron Horde.
Now, the mystery of his greatly increased strength has been solved: the fusion of two Gul'dans, the younger Gul'dan combined with the experience and magic of the older Gul'dan, has more than doubled his strength. How could Grommash Hellscream possibly be a match for two Gul'dans?
But Robbie didn't believe in the dictates of Destiny; history is hard to change, but the future can be.
They have unintentionally changed Azeroth; for example, Anduin's death has successfully sidelined King Varian.
Therefore, Robbie will absolutely not let the Evil Gul'dan go.
The Book of Medivh records the various spells Medivh encountered, including a small amount of Holy Light. Robbie used the newly learned Holy Light Cage to successfully bind Gul'dan.
"Damn human, let me go."
Gul'dan roared in frustration, then, his face contorted in pain, he asked, "Wait, who am I? Where am I? I shouldn't be like this, oh my god, my head hurts so much."
The fusion of the two Gul'dans was not yet complete. Robbie's fist gradually clenched, and the Power of the Holy Light wrapped around Gul'dan, penetrating his body and destroying his Fel Magic.
Holy light emanated from Gul'dan's seven orifices. The clash between Fel and Holy Light wreaked havoc within him, causing Gul'dan excruciating pain. He couldn't help but howl loudly, desperately pleading:
"Wait, human, we can talk."
Gul'dan recognized the Book of Medivh in Robbie's hands:
"You have obtained the Book of Medivh and are qualified to see the conspiracy behind it. You should know that I should not die here; this is not my Destiny."
"Do you know when you're going to die, Gul'dan?" Robbie destroyed the source of Fel within Gul'dan, stripping him of his magic and rendering him incapable of fighting, but he was in no hurry to execute him.
Gul'dan, probably anticipating this as his only chance to survive, quickly said, "Yes, I foresaw my death. It was on a platform, and I saw the Burning Legion slowly approaching. If I win, I will live; if I lose, I will die, killed by a winged Demons."
The resurrected Demon Hunter Illidan, Gul'dan's death prophecy piqued Robbie's interest.
"You face your Destiny so calmly, aren't you afraid of failure?"
"I have received the Legion's reward. Even in death, I will be reborn in the Twisting Nether, like Demons of the Legion, and I serve not only the Legion."
Having said that, Gul'dan glanced at the bright full moon in the sky and continued:
"You must have many questions about the Book of Medivh. Believe me, I can help you answer them. In this world, I am the person closest to the truth. Thrall, Sylvanas, and even Medivh are just pawns. The one who truly controls the game is manipulating everything from behind the scenes."
Robbie hesitated. Gul'dan was exceptionally cunning and a master of Demons seduction.
But he was right. Later in Medivh's Journal, especially in the section after his return to Azeroth, things became blurry and incomplete, with some names referred to by code names.
There seems to be a force interfering with the recording of the Book of Medivh.
Leaving Gul'dan behind would be extremely dangerous, but Robbie was willing to take the risk.
"Alright, Gul'dan, I need another reason, a reason for me not to kill you."
Gul'dan lowered his head and remained silent for a long while; in his eyes, two figures had already merged together:
"Do you know about the Emerald Dream? Actually, they don't need to be asleep. Besides the ignorant people, there's a group of Elites on the Azeroth Continent who are pretending to be asleep. You should know who I'm referring to."
Night Elves?
The Azeroth Continent may appear peaceful now, but undercurrents are surging beneath the surface, making it far from safe.
What kind of disastrous consequences will the removal of King Varian bring? No one knows how the other races in the Alliance will retaliate—whether they will compromise or make concessions, or directly threaten with force. No one can predict the outcome.
In contrast, Shadowmoon Valley in Draenor is completely under the control of the Draenei. With the Alliance's covert assistance, Yrel's power is becoming increasingly stable, making it relatively safe.
Robbie and Vanessa escorted Gul'dan and Med'an back to Draenor, to the fortress in the Lunarfall, where the singing Naaru, Kel'Thuzad, and most of the Brotherhood's officers were located, ensuring their safety.
Gul'dan and Med'an were taken into the dungeon. Med'an hung his head dejectedly, like a defeated rooster.
Gul'dan, however, was extremely unwilling to give up. He seized every opportunity to curry favor, proudly saying, "Don't let my status as a Warlock; I'm actually very knowledgeable about all kinds of spells. You definitely need an Archmage like me."
Robbie shook his head indifferently. "No need, we have a more reliable Archmage, more knowledgeable than you."
Kel'Thuzad emerged from the underground laboratory, and when he saw Gul'dan, his eyes gleamed.
"Please be sure to hand him over to me; I have some experiments that require his cooperation."
Robbie didn't speak. Vanessa stepped forward and calmly instructed, "It's up to you. Just don't kill them."
"A human mage, you are Lich, you bear the aura of Ner'zhul, you have devoured the power of my mentor, who are you?"
Upon seeing Kel'Thuzad, Gul'dan was terrified, like a mouse before a cat. "No, no, I confess, I'll tell you everything, don't let me fall into his hands!"
A black light appeared in Kel'Thuzad's hand, easily subduing Gul'dan's soul.
"A perfect casting material, reminds me of the Lich King Ner'zhul. Let's see how much useful Legion data I can extract from your soul."
The Lunarfall.
Robbie, Vanessa, and Kel'Thuzad studied the Book of Medivh together.
After graduating from the Sargeras Void Academy, Medivh returned to Azeroth and embarked on a series of journeys and adventures, leaving his mark on many parts of Azeroth.
The Blasted Lands, Blackrock Mountain Range, Ahn'Qiraj Empire, Ulduar in Northrend, Pandaria, Mount Hyjal, Broken Isles, Gelkis Kingdom, Kingdom of Kul Tiras, Zandalari Empire
This made Robbie and his two companions realize that there was a reason for the chaos in Azeroth.
Medivh's Journal records his observations and secret plans in these places. Although the records are not clear and are vague, the conspiracy can still be deduced.
For example, the rage of Ragnaros, the Firelord; C'Thun and Yogg-Saron breaking free from their seals; the emergence of the Sha from the Pandaria mists; and N'Zoth's resurgence—all of these are related to Medivh's journey; he had already orchestrated everything.
"That damned guy, he was controlling the Destiny of Azeroth from behind the scenes."
In one of his diary entries, Medivh made the following record:
"I witnessed the Dark Side of the Moon with my own eyes, that horrifying scene."
"More pitiful than the ignorant masses are the countless rulers who pretend to be asleep. They know the Destiny of Xe'ra, but only think about their own benefit, pretending to be asleep."
"Those wise men who dared to awaken the slumbering people were mercilessly banished and imprisoned forever. I met a Night Elf who had been imprisoned for ten thousand years by those who feigned sleep. His name was Illidan Stormrage, a wise man who was supposed to be the Savior of Azeroth, but he was on the verge of madness."