Very nice. I like Cheka Man's idea above - it could be a very amusing way to pin the blame for some disaster on the PCs. You know, kill the demon, sell his stuff, the town gets destroyed in a giant drunken orgy sort-of-thing. I could also sort of imagine demons, or even clever dragons or royalty, using the stones to weaken guests. "Oh, Ambassador, you simply must stay in our sapphire room. It's truly exquisite."
It could also be an interesting idea to simply define demons by their benefiting from these stones. That is, a demon doesn't have any special powers other than what it gains from these. Could create an interesting hierarchy of wealth.
I am mildly confused about the very first one, though. When you say consumption, you mean tuberculosis, right?Go to Comment
I really like Laj. As a setting element alone, he's great, and I love that he's easily flexible enough to fit in almost any game: he could be a robot, a transhuman AI, a Buffy-style demon, fantasy god; there's a lot.
One thing that isn't quite addressed here (though I don't think it needs to be) is whether Laj is all-knowing and a perfect judge, or if he can convinced, and is simply utterly impartial. That is, are there lawyers who specialize in dealing with Laj? You could run a Law & Dungeons game, with the PCs travelling the world to collect solid evidence against incredible evil-doers and then coming to present it in the court of Laj.
I don't know; I really like it.Go to Comment
I think that these are interesting from what I think is the intended perspective, traditional fantasy, but I think that they could also be really interesting in a more Harry Potter sort of setting. In the former, they offer some interesting ideas, but I think would mostly matter in their actions and bonuses.
In a game focusing more on wizards, though, I think that they could be pretty neat. Stonepal shenanigans, maybe tubs of water for people to put their Wet One's in when they're occupied. Getting an upgrade could be a big deal - you could even use the four elements as a sort of Hogwarts-style Sorting, actually.
From the perspective of somebody interested in familiars, I think that they're neat.