Widow Maker: An Unboxing of Legendary Marvel -- Black Widow Expansion

About Legendary: A Marvel Deck Building Game – Black Widow, from BoardGameGeek:

Orphaned as a child, Natasha Romanoff was raised and trained to become a lethal spy before becoming a super-hero and an Avenger. This 30th expansion of Marvel Legendary is filled with heroes and villains from decades past. Black Widow, Red Guardian, Winter Soldier, and the White Tiger join the fight against evil! Contains: 100 Playable Cards 1 Rules Sheet 5 Heroes! 2 new Masterminds and Villain Groups to watch out for! All cards contain original art. Requires the Marvel Legendary Core Set to play.