DM_Jeff
Explorer
While introduced in the Planar Handbook, WotC moved them out of being only on the outer planes and put some in the environmental books that can be on the prime material.
I ran a D&D campaign in my homebrew world using the Corwyl Elves sourcebooks from Green Ronin, and filled the valley with a handful of lost touchstone sites. The players really got a kick out of discovering them and some using the powers. But it wasn't such a knockover hit I continued using them in my new game. They're better when the DM has good story intentions to use them.
-DM Jeff
I ran a D&D campaign in my homebrew world using the Corwyl Elves sourcebooks from Green Ronin, and filled the valley with a handful of lost touchstone sites. The players really got a kick out of discovering them and some using the powers. But it wasn't such a knockover hit I continued using them in my new game. They're better when the DM has good story intentions to use them.
-DM Jeff