They state that they corrupt Villagers but don't explicitly specify that it's only villagers, and it's one of those things that are hard to keep track of during the transition from a friendlies-who-tell-the-truth-and-enemies-who-lie paradigm to a friendly/unfriendly-versus-truthful/lying four-option matrix, deserving of special highlighting I think. I also missed that the Poisoner only targets cards right next to it initially, possibly because the terminology wasn't standardized with the # Cards Away abilities.
I think what I'm saying is that a glossary/rules reminder guide would be helpful. :)