St. Patrick’s Day picture book where man is captured by leprechauns. I don’t remember much of it, but when I was in middle school (2010-2014) a teacher read us a book about a man whose horse/cow was stolen by leprechauns, so he follows them the next time they come and gets trapped in their home under a mountain until he can escape— which he eventually does and with his animal. The one thing I definitely remember is that the book mentioned that the Leprechauns used to be in heaven, but they were thrown out by Gabriel after the fall of Lucifer, forcing them to live on earth with humans.