Marvel Super Heroes Collector's Club Trading Cards

Published by Scholastic Entertainment Inc. in 2006-07 as part of a monthly subscription service, and appears to be a mechanically simple card game with 5 types of cards

 Hero (blue)
 Villain (purple)
 Resist (red)
 Power (green)
 Wild Card (yellow)

There are also Ultimate Villain foil cards that had a slightly different structure than the standard Villain cards.

The game was distributed as fixed packs in each monthly shipment to club members, with a metal tin in the initial shipment. Unfortunately, no copies of the rules are to be found online, so most people who have come across the cards appear to be unable to actually play the game.