Product details:

This set featured 179 base cards plus the checklist This set was noteworthy because 135 of the 180 base set cards were portions of larger 9 card pictures. Thus, when the cards were put into standard 9 card sheets, the cards formed a large, contiguous, image. There were also 9 cards of "Unsolved Mysteriessuch as Wolverine's origin or the identity of the 6th member of the Infinity Watch. The remaining cards featured famous battles of heroes vs villains and also heroes vs heroes.