Nope. But I thought Paths of the Dead would also be a potential answer.
Palantir is way off.
It doesn't actually do most of the things in the riddle. Especially the line that says "inside her kingdom". Kingdom might be metaphorical, yes, but
inside it? Denethor never lied down to rest within the palantir, or even its "kingdom". The "inside" is more important than you might think - more important than the kingdom.