It’s interesting to me that this article, written for a general audience, doesn’t mention what the card does. On the one hand it doesn’t really matter, the point of the story is “man has odd hobby of collecting many copies of cheap card”. On the other hand, it wouldn’t take more than a sentence to say “In Magic you use lands to pay for your other spells, and Stone Rain sets your opponent back by removing one of their lands.” Arguably one of the simplest cards for an outside audience to understand.