There are plenty of Easter Eggs for you to find in Doctor Strange when it hits theaters next month. The film, bringing magic to the Marvel Cinematic Universe in a major way for the first time, features artifacts, magical symbols, and even characters like another Sorcerer Supreme and the mother of one of the Runaways.

But when props, costumes, and sets are being designed, there are way more than actually get put in the movie. When looking at the number of mystical aritifacts in the Marvel Universe, it was easy for the designers to go overboard on what they created - and that means some of it is left behind. One such item was a special sword called The Ebony Blade. The sword is a mystical weapon akin to Excalibur, and wielded by the Black Knight. It was cut from a meteor, and wielded by Sir Percy of the Round Table, and cursed. Dane Whitman, the most common "Black Knight" and longest wielder of the blade in the pages of Marvel Comics, was Percy's descendant.

(Photo: Marvel)

When I spotted the blade while on a set visit to Doctor Strange, propmaster Barry Gibbs explained that it came and went, along with another prop.

"It was [going to be in the movie]," Gibbs said when the solid black blade was pointed out. "That was going to go into a book called the Lexicon of Relics, but the Ebony Blade was taken out of the script. I don't quite know why. Again, as things evolved, it wasn't pertinent to the script. Things just moved on."

The Ebony Blade was created back in 1955 by Stan Lee, and is said to be the strongest physical weapon (unbreakable) in the Marvel Universe. Its mystical enhancements make it effective against both mystical and physical barriers and protection, allows it to absorb energy attacks, and more. In addition to the Black Knight, other notable characters who have used the Ebony Blade include Valkyrie, who will appear in Thor: Ragnarok, and Black Panther, who has his own film following his debut in Captain America: Civil War.

Is this an indication that Dane Whitman isn't far behind in the MCU? Probably not, but it at least means the door is open for characters like that to emerge. Marvel Studios president Kevin Feige told Comicbook.com that he prefers to use characters from the comics to fill any need when he can.

"That's how we always build the universe," Feige said. "There are so many characters in the books, that if we have the need for a person to be in this place at this time and have a line, or have no lines, we still want it to be someone. Often times, that's how the names come about."

Doctor Strange hits theaters November 4, 2016.