When I was like eight years old I read a novel where the protagonist gets isekaied to a fantasy world and immediately bumps into a wise mentor figure who purportedly wants to help her become a wizard, except it turns out that he's teaching her a fake magic system that does nothing except drain her power for his benefit. This wasn't even the actual plot of the book (the scheme is uncovered after like one chapter), but I've always wanted to do something with that in a tabletop RPG where the GM is actively lying to the players about what the rules are and they have to figure out how the "real" mechanics work. I haven't put any deep thought into how that could actually work from a structural perspective that doesn't just immediately devolve into yet another tedious exercise in "here's the vague suggestion of a system, now have the GM make something up", but it's on my "to do" list!





















