Odd question: Move Terrain and permanent Sunlight, (or any other area enchantment).

[RyanW]

Originally Posted by Anaraxes

I'd lean toward assuming a magical metaphysic that the Continual Sunlight spell is attached to a location, rather than the contents of that location. That is, the spell's area is a place in space. (It's magic; we don't have to worry about planets rotating or revolving around their sun, or any of that sort of thing. If extra math floats your boat, feel free to have "a place" mean the complicated path of a continually moving point that conveniently maintains a fixed relationship to the continually moving place it was cast.) So, the new terrain is sunlit, if it's inside that original area. Terrain moved out is no longer lit. The area of the Continual Sunlight is independent on what happens to be inside that area; the light is just created in that area and falls on whatever it falls on.

That would be my interpretation. Otherwise you might get odd things like carrying around a shovelful of sunlit dirt for illumination.

Though it does have some weird things to think about when you realize just what permanent really means. What effect do plate tectonics have on area effect spells? Does the spell remain a circle centered on a spot that drifts with the tectonic plate it is on, or the one the caster was on when cast? Or does the area distort as the land under it shift (i.e. given enough time, could you cast a three hex wide spell that winds up split into two chunks on opposite sides of a rift valley, or an ocean)?