10 Worst Things Doctor Strange Has Ever Done
3. He Allowed Loki To Become The Sorcerer Supreme
Believing that he wasn't strong enough against oncoming threats, Strange bequeathed his title of Sorcerer Supreme to Thor's step-brother, Loki. Strange became a vet, accompanied by his talking basset hound, Bats. (Also, a talking basset hound is a concept that deserves its own movie adaptation).
Pretty much everybody had the same response to this decision; Why would Strange choose Loki, who is literally the Prince of Lies and the God of Mischief? According to Strange, "The title of Sorcerer Supreme doesn't care about such things, apparently".
Naturally, everyone with half-a-brain was somewhat skeptical of Loki and why he would be interested in protecting Earth. Nevertheless, Strange believed Thor's step-brother did an admirable job as Sorcerer Supreme. As soon as he won the title, Loki attempted to boost the magical levels of the planet so the average Joe could protect himself from demonic forces.
Strange later learned (and bare with me on this) that Loki tricked him! It turns out Loki used his dark magic to convince Strange to retire and make Loki the new Sorcerer Supreme.
When Strange realised this, he reclaimed his mantle as Earth's magical guardian before Loki had a chance to cause irreparable damage to the world.