I love thinking through the strategy of this game. Every Marvel hero is different and they play like who they are... Hulk gets more powerful the more he gets hit; Ghost Rider is massively powerful, but hurts himself in the process; Magik uses her Limbo portals to deal damage and position enemies; Captain America defends the team by sacrificing himself so teammates don't get hit; Captain Marvel goes binary to double her damage; Spiderman swings all across the battlefield using his surroundings to deal damage. You play heroes together to compliment each others' strengths and weaknesses to win.
The story is good, you build relationships with your teammates to get better cards and you are constantly unlocking things to make your team(s) better. And the gameplay is still the best part; surveying the battlefield and making the right moves is great and the game keeps it fresh by constantly changing objectives.