Secrets
Secrets work like this, right now. This is subject to change. Possession of a Secret grants arcane power. The more people who hold a Secret, the less power it grants. If we were playing a D20 game, then you could have up to +20 in your Secret skill if you were the only one who knew a Secret. If two people knew the Secret, the maximum would be +15. Ten people? +10. And so on. ...