@Guilberwood IIRC in the Planescape version of Mt. Celestia, you had to pass tests of virtue to ascend. So, maybe there's a worldly counterpart to descending from such lofty heights? A series of mini-encounters with mundane folk designed to test the spiritual lessons the PCs learned on Mt. Celestia...if they take time and resolve these mini-encounters well they can learn extra information pertinent to the rest of the game session/adventure. If you do something like this, it will help to have an angelic figure at the start of the session who advises the PCs of a metaphysical law: "All who leave the Mount will be tested by six mortals, and one devil in mortal guise."Would be primarily role-playing, wouldn't eat up much time, gives epic-level PCs an incentive to explore (rather than race to the bottom), allows you to recap/reaffirm/further develop the point of their adventures in Mount Celestia (eg. How has the world changed?), and even lets a tempter devil in your campaign (if there is one) make a reappearance.
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