Robert Downey Jr. has been talking a whole lot lately about his acting future in the Marvel Cinematic Universe, and while it doesn’t look like we’ll be getting Iron Man 4 anytime soon, Downey’s Tony Stark is becoming a featured part of another Marvel franchise.

Reports have it that Downey Jr. is close to signing a deal that would have him co-star alongside Chris Evans’ Captain America in Captain America 3, and that’s not all. The third film centering on Steve Rogers is expected to adapt Marvel’s infamous comic book storyline “Civil War”, which ran from 2006 to 2007 and featured a storyline that pit Iron Man and Captain America against each other. Basically, “Civil War” revolves around the Superhero Registration Act, a bill that requires superheroes to unveil their identities and register with the government. Tony Stark strongly supports registration, believing that superheroes with powers should answer to somebody and be held accountable for their actions, while Captain America was firmly anti-registration and believed in superhero privacy.

It’s unknown how close an adaptation Captain America 3 will be of the “Civil War” storyline, but if I was to wager a guess, I’d say it’s definitely going to keep the core conflict of the story between Captain America and Iron Man, who essentially plays the villain of the comics arc. Marvel’s choice of adapting “Civil War” has also sent rumors of Spider-Man joining the MCU into a tizzy.

Just last week HitFix reported some rumors that Marvel and Sony have had talks of a collaboration that would lead to Spider-Man joining the MCU, and considering Spider-Man’s prominent presence in the “Civil War” comics storyline, this may be seen by some as an indication that those rumors have some truth to them.

Regardless of any rumors, I am insanely excited for the future of the MCU. Seeing a storyline that pits Captain America versus Iron Man is simply a mouth-watering prospect and having one of them play the antagonist of a film would add an intriguing wrinkle to the constantly expanding MCU. If Spider-Man somehow escapes the evil clutches of Sony (you saw Amazing Spider-Man 2, right?) and somehow joins up with the Avengers, it’s safe to say my brain may just explode.

The MCU’s next film on tap is Avengers: Age of Ultron which will hit theaters May 1, 2015, while the Russo brothers’ Captain America 3 won’t hit the big-screen til May 6, 2016. I’m just gonna go out on a limb and say the wait will be worth it.