I have the throne for the Slann, but I want to use it for a Starseer as well. Has anyone done that before? If not do you guys have any suggestions, as to which sprue should I convert a skink from? Thank you in advance.
All the normal skinks are standing and stooping forward, I think the best bet would be the Oracle from the Carny kit.
One of the old skink pterodactyl riders is sitting on his feet, though I think he's quite a bit smaller than the normal starseer model. Only picture of him I could find.
Indeed... and one of the old oop skink handlers is also in a kind of sitting position... but both are considerably smaller than modern regular skinks... not practical for a conversion like you're planning I fear...
Maybe instead of just one skink, you have a conclave of skinks working together to cast. Kneeling ones like above, stooped ones and others pumping their fists in the air. Lots of gyrating, regardless.
I think one of those old terradon riders, with some plaques and a suitable staff upgrade, would look ace