And on page 351, Donaldson wrote:[Hollian speaking] "... We are sustained, and in some manner defined, by the sovereign Earthpower of the Andelainian Hills. Should we depart this region, we would not long endure among the living."
Linden saw that this was true. The strange gleam upon the Stonedownors was the same magic which had given Caer-Caveral's music its lambent strength. Sunder and Hollian were solid, physical, and whole. Yet in a special sense they had become beings of Earthpower--and they might easily die if they were cut off from their source.
Yet in Runes, Anele states that Sunder and Hollian came to Mithil Stonedown in order to have him, and that they traveled all over the Land, and lived very, very long lives. So how is this possible? It wasn't just Hollian's claim, Linden saw that it was true with her percipience. And it wasn't the Sunbane that created the obstacle (obviously overcome by Linden), because the Hills themselves were the source of Sunder/Hollian's ability to persist among the living, a source which could not sustain them if they were cut off from it."You have said taht we are the future of the Land. It has become our wish to discover that future here. And to bear our son in Andelain."
So, was it the Staff of Law? How would that override the conditions Donaldson set out here? The magic which sustained them was similar to forestal magic. While the SoL might perform similar functions, wouldn't that require a constant output of power? And perhaps a constant input of will?
Did Donaldson ever address this in the text, and I'm forgetting? I couldn't find anything about it in the GI.