In a book I’ve been working on for a while, the kings retain power by controlling dragons. I was thinking of a dragonbone throne, like this: The Dragonbone Throne was a monolithic mass of melted and fused dragon bones. Thirteen molded steps rose in the inky, slick throne. The seat was scaly, rippled and sharp. The back and sides of the Throne were drawn-out thorns, seeming to splash away from whoever sat on it. Dragon skulls, warped by fire, seemed to press through the seat. Six human skulls were locked into the barbs, eyes pierced by the Throne. Does this seem sufficiently extreme? Any other cool things that could be added?