So most of Lindons advancements have been a bit over the top. Unsouled to copper straight up splitting his core, then copper to iron he straight up consumed (venom and blood) what like 7 sand vipers? Instead of the small needle of venom and half a shot glass of blood. Then iron to jade he binds his core with the descendant of a dragon to embrace a path of blackflame, and so forth all the way to manifesting an icon as an underlord. My prediction is that like NS he will consume a powerful beast to advance to monarch. But not any beast, he's gonna consume a dread god... maybe not all of one but a lot of it which will set him a part and prepare him to find subject one.