This article contains spoilers for Doctor Strange in the Multiverse of Madness.
Doctor Strange in the Multiverse of Madness makes Iron Man's death in Avengers: Endgame even worse. Steve Rogers refused to trade lives in Avengers: Infinity War, insisting there had to be a way to stop Thanos without sacrificing an Avenger — and the consequences of his mistake reverberated across the universe when Thanos snapped his fingers and erased half the living creatures in the universe. This led Doctor Strange to make a different decision, however, setting in motion a chain of events that would lead to Tony Stark's Avengers: Endgame death to put things right.
Doctor Strange made this fateful decision after using the Time Stone to view over 14 million different futures during Avengers: Infinity War. It's clearly a decision that has continued to weigh heavily on him because he's well aware the whole universe paid a terrible price and, for five years, half the universe's population had been snapped away. In one early scene in Doctor Strange in the Multiverse of Madness, Strange is confronted by a former colleague who asks if there was another way to beat Thanos. Strange insists there wasn't, but it's clear from his troubled reaction that the question haunts him nonetheless.
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Shortly after this scene, Doctor Strange is plunged into an infinite multiverse, where he learns that 14 million future timelines are nothing compared to the diversity found there. Arriving on Earth-838, Doctor Strange faced the possibility he could have died in Iron Man's stead to stop Thanos, but it didn't take him long to learn this was not the case. Rather, the Doctor Strange
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