I wonder what will happen to Cerilia when the elves finally die out. As
the books say, time passes differently in elven lands. This leads me to
believe that the lands themselves are magical due to the presence of the
elves, because in former elvish domians (the Erebanien for instance) the
"wierd time" syndrome does not exist.

So perhaps this is the true calling of the elves. Sidhe are not limited as
spell caters, they can climb to unlimited level. And it seems that in
lands where the humans dominate they fornicate away and populate the land
with their squalling brats, and the magic dies. So then, when the last of
the Magic's guardians dies, what happens to the magic?

Just a thought