After reading many comments about invasions from the landings folder and others, I have a suggestion.

Often in the times the Elanthia is based on, there would be small bands, something like bandits, or maybe entrepreneurs of a sort that would pick a spot any spot they thought they could defend and try and set up tolls. If you wanted to pass you had to pay them a toll. Typically this would be bridges or deep chasms, etc. places with no easy way around and easily defensible on their part.

What if what we had critters now an then that decided to do this, trolls, orc,bandits, groups of any race, gypsies, hobgoblins, giants, etc that decided to try an collect tolls or bribes to pass through there lands. when you came to one of these spots one of the critters a tollgatherer or something stood there and demanded a toll. you could pay it an pass, (but it should be a silly big one, like 10k or some silly item like a table leg) or you kill em an move on. But if you kill him/her then his clansmen attack in that room an maybe the next few, and or chase you until you leave there area.

they could be age specific for the hunting area if off on side trails, or they could work like regular bandits and based on the age of the travelers.