When one thinks about it, Duke, a mere Morningstar mage, had achieved the nearly impossible task of vanquishing Neltharion, the most formidable nightmare of the dragon race for millennia, a demi-god. It would be absurd not to expect envy from other dragons.
What feat in this world could possibly surpass Duke's achievement?
However, deeper reasons lurk beneath.
Malygos' vented anger was far from over.
Once the most powerful among the five Guardian Dragons, he lost his mate, offspring, and almost all his subordinates in quick succession. Living a solitary life, or rather, a lonely dragon's existence, for ten thousand years. Finally avenging his enemy, not only was his spotlight stolen by an inconsequential being from a race he looked down upon, but that being was also of inferior magical prowess.
Logically, Malygos knew he should be grateful to Duke.
Emotionally, he struggled to control his temper. His madness was mostly directed at Neltharion and the Black Dragonflight.
Yet, he desperately needed an outlet for his pent-up rage!
Attacking his kin was out of the question.
Duke, who happened to be present, became the unintended target.
After a slight show of force against Malygos, Alexstrasza quickly intervened, sending a secret message to Duke, "I'm sorry, Duke. He wasn't always like this. He used to be cheerful and open-minded, not minding magic being shared with other races. It changed after the death of his mate..."
Alexstrasza rapidly communicated many things, all of which Duke ignored. His mind was wandering elsewhere.
It was the course of history.
Duke wasn't sure if he could prevent the imminent assault by N'Zoth. If he could, then the historical interdimensional expedition against Draenor by the Alliance might not occur. However, regardless of the expedition, the Burning Legion's schemes against Azeroth won't cease. The Third Dark Portal War was inevitable.
If one were to link the Third War with the present Malygos, the connection is profound.
The Third War easily brings to mind the undead of the Scourge. But without the pinnacle of the undead's military might, the Frost Wyrm Legion, even with countless skeletal warriors and zombies, they would merely be fodder against true transcendent powers.
They were, however, numerous and thus, a nuisance.
However, with the Frost Wyrm Legion, the tide would turn.
Where did the Frost Wyrm Legion originate?
They were the Blue Dragons slain during Neltharion's betrayal ten millennia ago!
The leader of the Frost Wyrm Legion, Sindragosa, was indeed one of the top generals under the Lich King, Arthas.
Who was Sindragosa?
Isn't it obvious?
She was the beloved mate of Malygos, the Spellweaver!
As Duke snapped back to reality, he heard Alexstrasza's almost pleading tone, "Duke, I know Malygos' attitude is problematic, but deep down, he's good. He's preparing to resume his duties as a Guardian Dragon. Can you let this slide just this once, considering it as a small favor I owe you?"
"Alright," Duke agreed instantly, relieving Alexstrasza. She had feared that Duke, with his relentless attitude, would confront Malygos in a cataclysmic showdown within the Wyrmrest Temple. She doubted Duke would prevail, but she genuinely hoped to avoid any conflict between the two 'allies'.
Conveniently, Malygos spoke, "Very well, for Alexstrasza's sake, I'll overlook your insolence. I understand you seek the power of magic. Demonstrate your magical prowess, mortal! If you impress me, how about I elevate you to what you humans call a 'Lunar Mage'?"
Duke straightened up, a mysterious smirk playing on his lips. Those familiar with him would know he was plotting.
Fortunately, for Malygos' sake, Duke decided to spare him this time. He had countless tricks up his sleeve to corner the Spellweaver in a single move.
For instance, revealing Malygos' negligence during his mental instability, when he abandoned monitoring global magic. Exposing the dark experiments in Quel'Thalas and Dalaran. The forbidden human alchemy, the bio-experiments capable of poisoning all living beings within a thousand miles...
If Malygos learned of these, his rage would know no bounds. He'd personally assault these 'sacred lands of magic', without the need for the Scourge.
Alexstrasza, of course, was unaware of Duke's sinister thoughts. However, her intuition told her that Duke genuinely had a way to eliminate Malygos, just like he did with Neltharion.
Feeling Duke's change of heart, the Dragon Queen felt a mix of emotions.
Internally, Duke mused, "Alright, considering the loss of your mate and your misfortunes, I'll let it slide this once."
Suddenly looking up at Malygos in the 'sky', Duke's lips still held that mysterious smile, "Wish to see my magic prowess? Very well, allow me to enlighten you!"
With a flourish of his hand...
For a split second, Malygos wanted to bombard Duke with a magical assault.
But as Malygos saw what Duke conjured with his magic, he fell silent.
Duke channeled his distant memories into the system, from the game's Icecrown campaign, memories of Sindragosa from the magnificent cutscenes.
Like a whimsical dreamer, he tasked the system sprite: to recreate a magical construct convincing enough for Malygos, named Sindragosa.
The sprite perfectly realized Duke's vision, infusing it with structure and life force.
In the void, as the magic circuits within Duke drained rapidly, a colossal bone dragon illusion appeared before Malygos.
Initially, the bone dragon resembled a child's sketch of a lizard skeleton. But quickly, from the chaos, it transformed into a specimen with clearly visible bones.
Every bump.
Every connecting cartilage.
Every bone's proportion.
By now, Malygos couldn't help but tremble.
This wasn't the end.
If the previous phase was a biological reassembly, what followed was a magical rebirth.
The large bone dragon illusion in Duke's hand, which had grown to ten meters long, started to emanate the aura of circulating magic circuits.
New magic circuits were being constructed within the bone dragon!
As Duke continued, the illusion took on more intricate details, becoming a perfect recreation of Sindragosa, capturing her essence in all its glory.