Target.com is currently offer a free LEGO 5004077 Minifigure 25 Piece Cube Toy Set when you spend $50 or more online in LEGO City, Ninjago or Super Heroes purchases. Offer expires on November 25th, 2015. Alternatively, you can also purchase this exclusive minifigure box for $9.99 as well. Minifigures include Ninjago Kai, Lightning Lad (DC Comics), City and Legends of Chima.
You can search the item online at Target.com with product# 49153007. Thanks to Shannon for writing in with the news and also forum member Bricks & Blue for posting in the forums.