I'd like to know how people have fixed the Slaying Stone premise hole: You have to go find a stone in a town overrun with orcs, goblins and a dragon, but:
- It only works near Gorizbadd
- It disintegrates after one use
- It can't be duplicated (using a ritual?)
What answers can I give my players if/when they point out the obvious fact that the stone is mostly useless, and the best thing to do is leaving it alone?