I’m going to be DMing a D&D campaign here soon, and I’d like to avoid the traditional “you are fighting a horde of goblins. Okay, now you’re fighting a clan of orcs..” and go with something slightly more mystery-esque. I’d like to try things like “which villager is the werewolf” and maybe “Where in the world is Baba-Yaga?”

Can you recommend any weird folklore or mythology that might help, or good places to find it? The weirder, the better.