Hold the power of the Marvel Universe in your hands when you open Magic: The Gathering | Marvel Super Heroes Collector Boosters. Collector Boosters are the ultimate way to add unique and exclusive cards to your collection; tons of foils, special card treatments, rares and/or mythic rares, and more await you inside every pack. Each booster may contain Collector Booster-exclusive card treatments, like extended-art cards or even an ultra-rare headliner card featuring a special foil treatment.