That is a nice solution. The only thing I would want to add is a restriction that the Reaper cannot move into and out of the dungeon in the same move (so he can't warp from the craggs to the treasure chamber and then from there to the chasm, for example). Otherwise, the treasure chamber would be used as a sort of jump point the Reaper can use to easily move anywhere on the board.

Aarontu said:

If i am right, you may not warp with the reaper from the crags back to the treasure chamber.

You can only warp from the treasure chamber to a location that is instructed on the space.

Velhart said:

That's not what talismanamsilat said above, though you can certainly play that way.