Doctor Strange: 31 Easter Eggs & References You Must See

If you're patient enough to wait until after the credits (they're not all that long actually), there's a second stinger, this time starring Mordo.

He visits Benjamin Bratt's Jonathan Pangborn who revealed to Strange that the Ancient One had the power to help him as he was a paraplegic whose health was restored using magic. Mordo believes this to be another act of abomination and undoes the work, leaving Pangborn paralysed.

This is clearly the first step in Mordo's "evil" plan to rid the world of Sorcerors after they meddled too much with the Natural Order (ignoring the fact that he's one, obviously). That's going to be a great way to bring him back as a recurring character in the future too (without having to make him the primary villain and killing him off).

The final note on the credits also reads Doctor Strange Will Return. Good.