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If Dag is a Sorcerer, as you are somehow convinced, then he doesn't pose a threat to you – that's one. If there are only three peaceful players, they won't execute the right people without the help of Mafia 2, and Mafia 2 won't help you with a strategy that is clearly losing – that's two. And finally, it's worth considering that Ples, based on the newspaper, looks more like someone who spreads death, rather than Astra. Therefore, if you're right about his allegiance, Tox was the Sorcerer. Thus, in Mafia 2, there is most likely only Camelia left – that's three.