Best Avengers alliliated cards?

Hey guys. I have never played this game competitively and don't plan to but I was interested in which cards are the best Avengers affiliated or flavorful for an Avengers team. For example, I know that there is a Moon Knight card that reduces the cost of Captain America. That seems pretty flavorful for an Avengers team, even though that Moon Knight does not have the Avengers affiliation printed on his card. I'd love to hear back from you guys.