Fria Ligans forum

Are there some rules of thumb for creating own monsters? I know, that monsters should be dangerous and unpredictable, but some more orientation besides the bestiary would be helpful.

Yeah, totally. Even if it's easy to eyeball stats in a game, some handholding can help a great deal for new GMs - especially those coming from different gaming background. Then again, modern games aren't too keen on teaching how to write an adventure or campaign either.