12 Past MCU Easter Eggs That Will Mean Something In Phase 4

3. Mordo's Murderous Vow - Doctor Strange

The Easter Egg

In the post-credits stinger for Doctor Strange, Karl Mordo reveals that he has plans to end the Sorcerors' meddling with the balance of things. He's going to not only undo their work, he also plans to wipe them out entirely.

That is of course calling back to the fact that he's a villain in the comics.

How It Will Come Back

Mordo will be back for the Strange sequel that will definitely be part of Phase 4, and even if he's not the only villain, he'll be there antagonising Strange and his fellow Sorcerors. Hopefully, he'll get a chance to stick around as a Loki like continuous presence as Phase 4 continues into 5 and beyond.