Those who know Phoenix Wright's canon will know that he has a magatama. His magatama is really the only magical possession he has, and it allows him to tell when people are lying. Now, he doesn't use it very often, only using it when he truly needs to know something or wants to see when someone is lying to him discreetly; should he do anything with it for a long period of time, it wears him down and, should he take a wrong turn, it will shatter his soul.
The magatama holds a secret power that draws the user in to use it as much as possible-- it's quite deadly in the wrong hands. In Phoenix's hands, however, it's perfectly safe. He can ignore the urge to use it and he can use it only when needed- but this is just some tl;dr on what the magatama does.
SO HOW DOES IT AFFECT YOUR CHARACTER?
Well, I'd just like to know who he can use it on and who he can't. Obviously he has to have a reason to suspect your character, and obviously he won't whip it out for every little thing-- Phoenix is pretty lax these days. But it would be good to have some guidelines etc, so I would be glad to know what everyone thinks and what he can and can't do in regards to his lie detecting piece of stone.
So, yes. Let me know!