The idea is that the conversions are triggered by BD rather than Unseen. If I try to explain it like this no one will think this would work so I’ma just show the relevant class cards. Starting with the BD converter. This is instead of the sheriff:
Magistrate
Blue Dragon Investigative
Passive 1: Greed - You must use your Night Ability every night. If you don’t then your target will be selected by RNG and won’t be told to you.
Passive 2: Stand in - If you would be occupied then you instead target a random target. You don’t know who if this happens.Night Ability: Search and Sieze - Learn if target player is a member of the Unseen. If they are not then they will be converted if possible. (Unlimited)
Mastermind
Unseen Special
Passive 1: Immune to death. Immune to Occupy and Redirect. Anyone who tries will think they succeeded.
Passive 2: Keeping Tabs - You appear to be BD. You know who the Magistrate is and what his night results are.Day Ability: Successor - Target player will become the Magistrate if they are convertable and the current one dies.
Night Ability 1: Foresight - Learn target players converted class. (4 uses)
Night Ability 2: Manipulate - Redirect the Magistrate to target player. He will not be informed. (3 uses)
The Unseen will have the member limited upped to 4