Magic the Gathering has a lore?
Actually yes, and a surprisingly deep one. You don't have to learn any of the story to play the game, but a new story (generally about the current set) is released each wednesday and generate a lot of discussion and speculation in the fan community. The recent Battle for Zendikar block was all about the resolution of a 7 years old cliffhanger in Rise of the Eldrazis. The current block is about an (egyptian-inspired) world that's been subjugated by one of Magic's oldest recurring villain.