by Chubby
I think that instead of limiting the number of paths that can be revealed it would be better to limit the number of turns that the heroes has to find and go through the exit. In this way the Overlord has motivation for slowing the heroes down as much as possible. (If the countdown could be implemented such that it give sense thematically like in the original "Dawnblade" quest it would be a plus).Another option is to give the OL an objective of his own and whoever completes their objective first wins. But that's probably harder to work into the encounter.