I got other thrones to worry about...so I don't worry about being the King of the hill. Instead, HKoC just levels all hills, magical, hidden, normal ones....he doesn't care. He leaves all places and thrones intact on the hills (He hath some power over levelling hills without damaging the surface)
But, he fixes permanent thrones (15 of them) on every now-plains-but-former-hills and enchants them so that they cannot be removed and also gives equal power over the now flat plains to whoever sits on the thrones. HKoC effectively abolishes Monarchy. HKoC awakes from his dream and goes away, lamenting how bored he was.