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Marvel Cinematic Universe Wiki

"Their connection to the Dark Dimension makes them more powerful in the Mirror Dimension... They can't affect the real world, but they can still kill us. This wasn't cleverness. It was suicide!"
Karl Mordo to Doctor Strange[src]

The Battle of the Mirror Dimension was an open conflict that pitted Doctor Strange, Karl Mordo, and the Ancient One against Kaecilius and his Zealots inside the Mirror Dimension.


"You defended the New York Sanctum from attack. With its Master gone, it needs another... Master Strange."
"No. It is Doctor Strange. Not Master Strange, not Mister Strange. Doctor Strange."
Ancient One and Doctor Strange[src]

After defending the New York Sanctum from Kaecilius and fighting Lucian Aster in the Astral Dimension, Stephen Strange was selected by the Ancient One to replace Daniel Drumm, who was killed during the battle, as the Sanctum's protector.

Strange, however, refused, citing that he took an oath to save lives and that his involvement in Aster's death went against everything he swore to do as a doctor. When the Ancient One claimed he was still set on feeding his inflated ego, Strange shot back by alluding to her drawing power from the Dark Dimension, which he learned from Kaecilius.

While Karl Mordo outright denied Strange's accusation, the Ancient One remained silent and warned Strange to choose his next words carefully before leaving. The two men started to argue only to hear Kaecilius and the remaining Zealots entering the Sanctum.[2]


Doctor Strange and Karl Mordo escape Kaecilius

"The Mirror Dimension. You can't affect the real world in here. Who's laughing now, asshole?"
"I am."
Doctor Strange and Kaecilius[src]

As Kaecilius prepared to destroy the New York Sanctum, Doctor Strange attempted to contain the situation by trapping everyone in the Mirror Dimension. Kaecilius, however, revealed that his connection to Dormammu enhanced his abilities while in the Mirror Dimension.

Realizing he made a grave error, Strange stole Kaecilius' Sling Ring and fled the Sanctum with Karl Mordo. Strange then used the Sling Ring to conjure a portal only for Kaecilius to distort gravity and make him lose focus. The Zealots proceeded to pursue the two Masters throughout New York City, twisting the landscape to the point where it was unrecognizable.

The Zealots lost in the Mirror Dimension

Despite Kaecilius' best efforts to kill them, Strange and Mordo successfully countered his attacks with help from the Cloak of Levitation and the Vaulting Boots of Valtorr. The lead Zealot eventually managed to separate the two and began chasing after Strange while his remaining followers pursued Mordo. Using the changing landscape to his advantage, Kaecilius cornered Strange, pinned him to the ground, and reclaimed his Sling Ring.

The Ancient One prepares to fight the Zealots

Kaecilius was about to kill Strange when the Ancient One appeared and used her powers to create a battle arena out of subway station walls, causing the Dark Dimension's symbol to be burned on her forehead. As a horrified Mordo realized that Strange had been telling the truth, the Ancient One tried to convince Kaecilius that she was attempting to save him from himself by not revealing her secret.

Kaecilius, however, refused to believe his former mentor and ordered the Brunette and Tall Zealots to attack. He then watched the Ancient One fight his followers and waited until she was fighting the Tall Zealot before conjuring a Space Shard.

Kaecilius mortally wounds the Ancient One

Quietly approaching his former mentor, Kaecilius used the Space Shard to stab her through his follower and mortally wounded the combatants. Satisfied by his actions, Kaecilius proceeded to throw the Ancient One out of the Mirror Dimension, where she fell several hundred stories to the ground below.[2]


The Ancient One talks to Doctor Strange before passing away

"We don't get to choose our time. Death is what gives life meaning. To know your days are numbered, your time is short... You'd think after all this time, I'd be ready. But look at me. Stretching one moment out into a thousand. Just so that I can watch the snow."
Ancient One to Doctor Strange[src]

Escaping from the Mirror Dimension, Doctor Strange and Karl Mordo took the Ancient One to Metro-General Hospital, where Strange worked with Christine Palmer and Nicodemus West in an attempt to save her life. As Palmer and West started operating, however, Strange's astral form was forced out of his body. Unable to understand what was going on, Strange made his way through the hospital until he found the Ancient One's astral form standing on a balcony overlooking New York City. Strange tried convincing her to return to her body but she refused, confessing that she always knew this would be the exact moment of her death.

The Ancient One proceeded to give Strange three last pieces of advice: that his arrogance and fear of failure kept him from true greatness; that, much like Jonathan Pangborn, he had to choose between returning to his old life or serving something greater than himself; and that, while Mordo would never understand why she drew power from the Dark Dimension, he needed Mordo's rule-abiding nature, just as Mordo needed his flexibility, to stop Dormammu.

After acknowledging that she was not ready to die despite her immortality, the Ancient One used her powers to manipulate time and watch the snow before disappearing from the Astral Dimension, causing her physical form to stop operating. Strange returned to his physical form before making amends with Christine and returning to Kamar-Taj.

Kaecilius and the Brunette Zealot, meanwhile, rescued the Blonde Zealot from the desert before making their way to China and preparing to launch their final assault on the Hong Kong Sanctum.[2]