Magic: The Gathering is a game where players use cards to cast spells on their opponents. The game quickly became a hit after it was introduced in the mid-1990s. But the game's very popularity led to a crisis inside the company.
Magic cards are sold in small packs with random sets of cards, like baseball cards. And, like baseball cards, some Magic cards quickly became more desirable — and more expensive — than others. Not long after the game was invented, particularly desirable cards were selling for hundreds of dollars each.