Legendary: A Marvel Deck Building Game – Civil WarExpansion

From BoardGameGeek:

In Legendary, players take on the roles of Marvel heroes, including the Avengers and X-Men, and team up to defeat an evil Mastermind. Legendary: Civil War is the fourth big box expansion since the Dark City release in 2013 and lets you play through the Civil War storyline from Marvel Comics! Legendary: Civil War features heroes from Captain America's Anti-Registration group including Falcon, Hercules, Tigra, and even the Pet Avengers Sidekick cards The new split Hero cards give players the ability to 'chose a side'!