Starting November 23, Mockingbird will be on sale for all players until November 26 on the popular Facebook game Marvel: Avengers Alliance! Mockingbird was originally only available as the ultimate reward for achieving fifteen mastery stars in the first Special Operation but starting on Black Friday players will have four days to recruit this secretive S.H.I.E.L.D. Agent from the Heroes section and get her before she is gone!
Join the millions of social gamers and Marvel fans who have already joined S.H.I.E.L.D by playing Marvel: Avengers Alliance at: http://www.facebook.com/avengersalliance
. The game is one of the top rated games in Facebook's App Center. Fans can also play Marvel: Avengers Alliance at www.playdom.com