New LEGO® Marvel Avengers Black Panther Mech Armor Building Set 76204 W/124 Pcs. This Lego set comes new, in its original box, and has never been opened or played with before. This Marvel Avengers building set is geared towards children seven years of age or older, but can be fun and challenging for any age. This 124 piece set easily constructs to form Black Panther Mech Armor. This set also includes a miniature Black Panther figure.