Which film  is a 2013 American superhero movies that has  Extremis elements?
Extremis:  Elements of "Extremis" were adapted for the 2008 film "Iron Man", and the "" episode "Extremis", and the storyline serves as the primary source material for the 2013 film "Iron Man 3". Iron Man 3: Iron Man 3 (stylized onscreen as Iron Man Three) is a 2013 American superhero film based on the Marvel Comics character Iron Man, produced by Marvel Studios and distributed by Walt Disney Studios Motion Pictures.
Iron Man 3