Solomon has already kind of half-killed himself trying to free his soul from the lantern, so he will definitely be someone who is going to push hard to learn as much as he can about that.

He's also a Necromancer so uh he might need to be watched when/if he goes to death-plane cos the last time he was there it was sort-of an accident. That being said, thanks to Asti he can't actually lose control and go nuts due to his magic anymore. He'll just not be very happy.