How a Beloved Card Game Became Embroiled in a Controversy Over Bots

It’s the most magical moment of my life. I am 10 years old and in the games aisle of a Target. Before me is a wall filled with all manner of trading card games. The dazzling monsters of Yu-Gi-Oh! The glittering colors of Pokémon. But at this moment, a new game has grabbed my full attention. Displayed on the booster pack is a beautiful angel—but not like the ones I see every Sunday at church. This angel is clad in battle-scarred golden armor, holding a pair of wild, serrated swords...